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		<id>https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=3068%3A_Rock_Identification</id>
		<title>3068: Rock Identification - Revision history</title>
		<link rel="self" type="application/atom+xml" href="https://www.explainxkcd.com/wiki/index.php?action=history&amp;feed=atom&amp;title=3068%3A_Rock_Identification"/>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;action=history"/>
		<updated>2026-04-12T23:33:29Z</updated>
		<subtitle>Revision history for this page on the wiki</subtitle>
		<generator>MediaWiki 1.30.0</generator>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=379551&amp;oldid=prev</id>
		<title>FaviFake: /* Explanation */ complete</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=379551&amp;oldid=prev"/>
				<updated>2025-06-16T13:45:04Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation: &lt;/span&gt; complete&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 13:45, 16 June 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot; &gt;Line 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4.}}&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources, or explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock, or the presence of local sediments.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources, or explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock, or the presence of local sediments.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>FaviFake</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=373374&amp;oldid=prev</id>
		<title>FaviFake: not funny, grammar</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=373374&amp;oldid=prev"/>
				<updated>2025-04-18T15:05:37Z</updated>
		
		<summary type="html">&lt;p&gt;not funny, grammar&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 15:05, 18 April 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources, or explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock, or the presence of local sediments. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt; &lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources, or explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock, or the presence of local sediments.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]], who tells him something like the above and concludes that she cannot identify the rock without more information. [[Randall]] then insinuates that this issue of provenance is a minor hurdle&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/del&gt;and implies that the best way to get rocks identified is to motivate the geologist you ask by paying them for the service. As the old adage says, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;“If &lt;/del&gt;you’re good at something, never do it for free.&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;” &lt;/del&gt;Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would discourage them from “giving away” such a valuable skill.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]], who tells him something like the above and concludes that she cannot identify the rock without more information. [[Randall]] then insinuates that this issue of provenance is a minor hurdle and implies that the best way to get rocks identified is to motivate the geologist you ask by paying them for the service. As the old adage says, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot;If &lt;/ins&gt;you’re good at something, never do it for free.&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot; &lt;/ins&gt;Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would discourage them from “giving away” such a valuable skill.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the second panel Cueball has wrapped the rock in a {{w|United States five-dollar bill|$5 bill}}, likely to pay/bribe Ponytail, and claims that this is how he found it. Suddenly it is easy enough for Ponytail to identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency.&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;{{citation needed}} &lt;/del&gt;(Furthermore, if a rock was wrapped in paper and put in a hole in the ground, the $5 bill would be covered with dirt and no longer be usable.) Palming people with &amp;quot;tips&amp;quot; like this when trying to {{tvtropes|EveryManHasHisPrice|sweeten an interaction}} is a common trope, the implication being that whatever happens to the attached object (a rock, a driver's license, an offered handshake), the cash is discreetly kept by the recipient.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the second panel Cueball has wrapped the rock in a {{w|United States five-dollar bill|$5 bill}}, likely to pay/bribe Ponytail, and claims that this is how he found it. Suddenly it is easy enough for Ponytail to identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency. (Furthermore, if a rock was wrapped in paper and put in a hole in the ground, the $5 bill would be covered with dirt and no longer be usable.) Palming people with &amp;quot;tips&amp;quot; like this when trying to {{tvtropes|EveryManHasHisPrice|sweeten an interaction}} is a common trope, the implication being that whatever happens to the attached object (a rock, a driver's license, an offered handshake), the cash is discreetly kept by the recipient.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;preemptively&lt;/del&gt;, &amp;quot;Can you tell me where this rock came from?&amp;quot;, or to draw their attention by being intentionally wrong, e.g., &amp;quot;Why is this granite red?&amp;quot;, or even to just provide the kind of fuller details that can give the expert more confidence that any answer they give is more useful to you.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;pre-emptively&lt;/ins&gt;, &amp;quot;Can you tell me where this rock came from?&amp;quot;, or to draw their attention by being intentionally wrong, e.g., &amp;quot;Why is this granite red?&amp;quot;, or even to just provide the kind of fuller details that can give the expert more confidence that any answer they give is more useful to you.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The conversation continues in the title text, with Cueball asking about the economic price of the rock which, unfortunately for him, is [https://www.geologysuperstore.com/product/garnet-mica-schist/ quite low] as a hand-sized sample. He may find this out by paying Ponytail another $5 bill. Unfortunately for him, he cannot know whether the total outlay will be offset in full (or more) until he has already made the second payment, or gone to the trouble of trying to blindly recoup his expenses from the first gratuity, not even knowing if he's badly over- or &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;underpricing &lt;/del&gt;any offer he might get.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The conversation continues in the title text, with Cueball asking about the economic price of the rock which, unfortunately for him, is [https://www.geologysuperstore.com/product/garnet-mica-schist/ quite low] as a hand-sized sample. He may find this out by paying Ponytail another $5 bill. Unfortunately for him, he cannot know whether the total outlay will be offset in full (or more) until he has already made the second payment, or gone to the trouble of trying to blindly recoup his expenses from the first gratuity, not even knowing if he's badly over- or &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;under-pricing &lt;/ins&gt;any offer he might get.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>FaviFake</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370693&amp;oldid=prev</id>
		<title>DKMell: touch-up</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370693&amp;oldid=prev"/>
				<updated>2025-03-28T17:35:08Z</updated>
		
		<summary type="html">&lt;p&gt;touch-up&lt;/p&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 17:35, 28 March 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources or &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;to &lt;/del&gt;explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock or the presence of local sediments.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;or explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;or the presence of local sediments.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]] who tells him something like the above and concludes that she cannot identify the rock without more information. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]]&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;who tells him something like the above and concludes that she cannot identify the rock without more information&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;. [[Randall]] then insinuates that this issue of provenance is a minor hurdle, and implies that the best way to get rocks identified is to motivate the geologist you ask by paying them for the service. As the old adage says, “If you’re good at something, never do it for free.” Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would discourage them from “giving away” such a valuable skill&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;[[Randall]] then insinuates that this issue of provenance is &lt;/del&gt;a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;minor hurdle&lt;/del&gt;, and &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;implies &lt;/del&gt;that &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;the best way to get rocks identified &lt;/del&gt;is to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;motivate &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;geologist you ask &lt;/del&gt;by &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;paying them for the service&lt;/del&gt;. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;As &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;old adage says&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;“If you’re good at something, never do it for free&lt;/del&gt;.&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;” Geologists make their living identifying rocks (among other things&lt;/del&gt;), &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;and while some scientists may be excited &lt;/del&gt;to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;discuss their work with &lt;/del&gt;a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;layperson in any context&lt;/del&gt;, a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;shrewd business sense would technically discourage one from “giving away” such a valuable skill&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;In the second panel Cueball has wrapped the rock in &lt;/ins&gt;a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{w|United States five-dollar bill|$5 bill}}, likely to pay/bribe Ponytail&lt;/ins&gt;, and &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;claims &lt;/ins&gt;that &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;this is how he found it. Suddenly it &lt;/ins&gt;is &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;easy enough for Ponytail &lt;/ins&gt;to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;fact that it was presumably not naturally surrounded &lt;/ins&gt;by &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;currency&lt;/ins&gt;.&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{citation needed}} (Furthermore, if a rock was wrapped in paper and put in a hole in &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;ground&lt;/ins&gt;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the $5 bill would be covered with dirt and no longer be usable&lt;/ins&gt;.) &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Palming people with &amp;quot;tips&amp;quot; like this when trying to {{tvtropes|EveryManHasHisPrice|sweeten an interaction}} is a common trope&lt;/ins&gt;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the implication being that whatever happens &lt;/ins&gt;to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the attached object (&lt;/ins&gt;a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;rock&lt;/ins&gt;, a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;driver's license, an offered handshake), the cash is discreetly kept by the recipient&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;In &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;second panel Cueball has wrapped &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;rock &lt;/del&gt;in a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;{{w|United States five-dollar bill|$5 bill}}, likely to bribe Ponytail, and claims &lt;/del&gt;that &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;this is how he found it. Suddenly it is easy enough &lt;/del&gt;for &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Ponytail &lt;/del&gt;to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;identify that it looks &lt;/del&gt;like &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;{{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency{{citation needed}}&lt;/del&gt;. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Furthermore, if a rock was wrapped in paper and put in a hole in &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;ground&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;the $5 bill would be covered with dirt and no longer be usable. Palming people with &lt;/del&gt;&amp;quot;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;tips&lt;/del&gt;&amp;quot; &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;like this is a typical trope&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;when {{tvtropes|EveryManHasHisPrice|trying &lt;/del&gt;to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;sweeten an interaction}}&lt;/del&gt;. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;The implication being&lt;/del&gt;, &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;whatever happens &lt;/del&gt;to the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;object to which it is attached (a rock, a driver's license, an offered handshake), &lt;/del&gt;the &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;cash &lt;/del&gt;is &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;discreetly kept by the recipient&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;This subverts &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;expected &amp;quot;correct&amp;quot; way to ask &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;question, which &lt;/ins&gt;in &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;these sorts of tips is often made by asking &lt;/ins&gt;a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;slightly different question &lt;/ins&gt;that &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;gives a reason &lt;/ins&gt;for &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the person who knows the information &lt;/ins&gt;to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;become interested, rather than feel &lt;/ins&gt;like &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;they are being asked to do work for you&lt;/ins&gt;. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Examples of expected ways to get &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;information might be to ask preemptively&lt;/ins&gt;, &amp;quot;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Can you tell me where this rock came from?&lt;/ins&gt;&amp;quot;, &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;or &lt;/ins&gt;to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;draw their attention by being intentionally wrong, e.g&lt;/ins&gt;., &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;&amp;quot;Why is this granite red?&amp;quot;, or even &lt;/ins&gt;to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;just provide &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;kind of fuller details that can give &lt;/ins&gt;the &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;expert more confidence that any answer they give &lt;/ins&gt;is &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;more useful to you&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot; Or even just provide the kind of fuller details that can give the expert more confidence that any answer they give is more useful to you.&lt;/del&gt;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The conversation continues in the title text, with Cueball asking about the economic price of the rock which, unfortunately for him, is [https://www.geologysuperstore.com/product/garnet-mica-schist/ &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;quite &lt;/ins&gt;low] as a hand&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;-&lt;/ins&gt;sized sample. He may find this out by paying Ponytail another $5 bill. Unfortunately for him, he cannot know whether the total outlay will be offset in full (or more) until he has already made the second payment&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, or &lt;/ins&gt;gone to the trouble of trying to blindly recoup his expenses from the first gratuity, not even knowing if he's badly over- or &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;underpricing &lt;/ins&gt;any offer he might get.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The conversation continues in the title text, with Cueball asking about the economic price of the rock which, unfortunately for him, is &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;quite &lt;/del&gt;[https://www.geologysuperstore.com/product/garnet-mica-schist/ low] as a hand sized sample. He may find this out by paying Ponytail another $5 bill. Unfortunately for him, he cannot know whether the total outlay will be offset in full (or more) until he has already made the second payment&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;. Or &lt;/del&gt;gone to the trouble of trying to blindly recoup his expenses from the first gratuity, not even knowing if he's badly over- or &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;under-pricing &lt;/del&gt;any offer he might &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;try to &lt;/del&gt;get.&lt;/div&gt;&lt;/td&gt;&lt;td colspan=&quot;2&quot;&gt;&amp;#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>DKMell</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370600&amp;oldid=prev</id>
		<title>FaviFake: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370600&amp;oldid=prev"/>
				<updated>2025-03-27T16:34:13Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 16:34, 27 March 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot; &gt;Line 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4 &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;- Please change this comment when editing this page. Do NOT delete this tag too soon&lt;/del&gt;.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources or to explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock or the presence of local sediments.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources or to explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock or the presence of local sediments.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>FaviFake</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370552&amp;oldid=prev</id>
		<title>108.162.241.211: /* Explanation */ fixed some grammar errors and added some paragraphs</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370552&amp;oldid=prev"/>
				<updated>2025-03-27T14:44:20Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation: &lt;/span&gt; fixed some grammar errors and added some paragraphs&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 14:44, 27 March 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l17&quot; &gt;Line 17:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 17:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Randall]] then insinuates that this issue of provenance is a minor hurdle, and implies that the best way to get rocks identified is to motivate the geologist you ask by paying them for the service. As the old adage says, “If you’re good at something, never do it for free.” Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would technically discourage one from “giving away” such a valuable skill.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Randall]] then insinuates that this issue of provenance is a minor hurdle, and implies that the best way to get rocks identified is to motivate the geologist you ask by paying them for the service. As the old adage says, “If you’re good at something, never do it for free.” Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would technically discourage one from “giving away” such a valuable skill.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;To this end, in &lt;/del&gt;the second panel Cueball has wrapped the rock in a {{w|United States five-dollar bill|$5 bill}}, and claims that this is how he found it. Suddenly it is easy enough for Ponytail to identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency. Palming people &amp;quot;tips&amp;quot; like this is a typical trope, when {{tvtropes|EveryManHasHisPrice|trying to sweeten an interaction}}. The implication being, whatever happens to the object to which it is attached (a rock, a driver's license, an offered handshake), the cash is discreetly kept by the recipient.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;In &lt;/ins&gt;the second panel Cueball has wrapped the rock in a {{w|United States five-dollar bill|$5 bill}}&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, likely to bribe Ponytail&lt;/ins&gt;, and claims that this is how he found it. Suddenly it is easy enough for Ponytail to identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{citation needed}}. Furthermore, if a rock was wrapped in paper and put in a hole in the ground, the $5 bill would be covered with dirt and no longer be usable&lt;/ins&gt;. Palming people &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;with &lt;/ins&gt;&amp;quot;tips&amp;quot; like this is a typical trope, when {{tvtropes|EveryManHasHisPrice|trying to sweeten an interaction}}. The implication being, whatever happens to the object to which it is attached (a rock, a driver's license, an offered handshake), the cash is discreetly kept by the recipient.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot; Or even just provide the kind of fuller details that can give the expert more confidence that any answer they give is more useful to you.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot; Or even just provide the kind of fuller details that can give the expert more confidence that any answer they give is more useful to you.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>108.162.241.211</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370546&amp;oldid=prev</id>
		<title>172.69.43.220: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370546&amp;oldid=prev"/>
				<updated>2025-03-27T13:04:54Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 13:04, 27 March 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/del&gt;or to explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/del&gt;or the presence of local sediments.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources or to explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features that can form similar-looking hard things, such as local lava flows, subduction into layers causing metamorphic rock or the presence of local sediments.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]] who tells him something like the above and concludes that she cannot identify the rock without more information. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]] who tells him something like the above and concludes that she cannot identify the rock without more information. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Randall]] then insinuates that this is &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;just &lt;/del&gt;a &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;lie geologists spread to obtain free money from curious people looking to identify rocks&lt;/del&gt;, and implies that the best way to get rocks identified is to &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;pay &lt;/del&gt;the geologist you ask. As the old adage says, “If you’re good at something, never do it for free.” Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would technically discourage one from “giving away” such a valuable skill.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Randall]] then insinuates that this &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;issue of provenance &lt;/ins&gt;is a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;minor hurdle&lt;/ins&gt;, and implies that the best way to get rocks identified is to &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;motivate &lt;/ins&gt;the geologist you ask &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;by paying them for the service&lt;/ins&gt;. As the old adage says, “If you’re good at something, never do it for free.” Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would technically discourage one from “giving away” such a valuable skill.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;So &lt;/del&gt;in the second panel Cueball has wrapped the rock in a $5 bill, and claims that this is how he found it. Suddenly it is easy for Ponytail to identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Handing &lt;/del&gt;people &amp;quot;tips&amp;quot; like this is a typical trope. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;To this end, &lt;/ins&gt;in the second panel Cueball has wrapped the rock in a &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;{{w|United States five-dollar bill|&lt;/ins&gt;$5 bill&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;}}&lt;/ins&gt;, and claims that this is how he found it. Suddenly it is easy &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;enough &lt;/ins&gt;for Ponytail to identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency. &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Palming &lt;/ins&gt;people &amp;quot;tips&amp;quot; like this is a typical trope&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, when {{tvtropes|EveryManHasHisPrice|trying to sweeten an interaction}}. The implication being, whatever happens to the object to which it is attached (a rock, a driver's license, an offered handshake), the cash is discreetly kept by the recipient&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot; &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;Or even just provide the kind of fuller details that can give the expert more confidence that any answer they give is more useful to you.&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The conversation continues in the title text, with Cueball asking about the economic price of the rock which, unfortunately for him, is quite [https://www.geologysuperstore.com/product/garnet-mica-schist/ low] as a hand sized sample. He may find this out by paying Ponytail another $5 bill. Unfortunately for him, he cannot know whether &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;this &lt;/del&gt;will be &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;a good deal &lt;/del&gt;until he has already made &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;it&lt;/del&gt;.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The conversation continues in the title text, with Cueball asking about the economic price of the rock which, unfortunately for him, is quite [https://www.geologysuperstore.com/product/garnet-mica-schist/ low] as a hand sized sample. He may find this out by paying Ponytail another $5 bill. Unfortunately for him, he cannot know whether &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the total outlay &lt;/ins&gt;will be &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;offset in full (or more) &lt;/ins&gt;until he has already made &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;the second payment. Or gone to the trouble of trying to blindly recoup his expenses from the first gratuity, not even knowing if he's badly over- or under-pricing any offer he might try to get&lt;/ins&gt;.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>172.69.43.220</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370532&amp;oldid=prev</id>
		<title>141.101.98.227: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370532&amp;oldid=prev"/>
				<updated>2025-03-27T10:01:06Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 10:01, 27 March 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources, or to explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features such as local lava flows, subduction into layers causing metamorphic rock, or the presence of local sediments &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;that can form similar-looking hard things&lt;/del&gt;.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called on to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources, or to explain what the pretty thing you're holding is called. It can be somewhat hard to identify rocks without knowing their original location and the materials that surround them, as this gives information on features &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;that can form similar-looking hard things, &lt;/ins&gt;such as local lava flows, subduction into layers causing metamorphic rock, or the presence of local sediments.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]] who tells him something like the above and concludes that she cannot identify the rock without more information. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;In the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]] who tells him something like the above and concludes that she cannot identify the rock without more information. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>141.101.98.227</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370531&amp;oldid=prev</id>
		<title>141.101.98.226: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370531&amp;oldid=prev"/>
				<updated>2025-03-27T09:59:07Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 09:59, 27 March 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot; &gt;Line 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Explanation==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{incomplete|Created by a SPECIALLY ARRANGED ASSEMBLY OF SILICATES THAT WILL DO IT FOR $4 - Please change this comment when editing this page. Do NOT delete this tag too soon.}}&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;the &lt;/del&gt;specialists who study natural features of the earth, are often called to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources, or to explain what the pretty thing you're holding is called. &lt;del class=&quot;diffchange diffchange-inline&quot;&gt; &lt;/del&gt;It &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;is &lt;/del&gt;somewhat hard to identify rocks without knowing their original location and the materials that surround them &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;- &lt;/del&gt;as this gives such &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;features &lt;/del&gt;as local lava flows, subduction into layers causing metamorphic rock or the presence of local sediments that can form &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;into &lt;/del&gt;similar looking hard things.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;{{w|Geologists}}, being specialists who study natural features of the earth, are often called &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;on &lt;/ins&gt;to interpret rock formations, either to understand the formation of our planet, identify suitable sites to mine resources, or to explain what the pretty thing you're holding is called. It &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;can be &lt;/ins&gt;somewhat hard to identify rocks without knowing their original location and the materials that surround them&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;as this gives &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;information on features &lt;/ins&gt;such as local lava flows, subduction into layers causing metamorphic rock&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;or the presence of local sediments that can form similar&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;-&lt;/ins&gt;looking hard things.&amp;#160; &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Thus in &lt;/del&gt;the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]] who tells him something like the above and concludes that she cannot identify the rock without more information. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;In &lt;/ins&gt;the first panel [[Cueball]] is seen handing a rock to the geologist [[Ponytail]] who tells him something like the above and concludes that she cannot identify the rock without more information. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Randall]] then insinuates that this is just a lie geologists &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;insinuate &lt;/del&gt;to obtain free money from curious people looking to identify rocks and &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;assures &lt;/del&gt;that the best way to get rocks identified is to pay the geologist you ask. As the old adage says, “If you’re good at something, never do it for free.” Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would technically discourage one from “giving away” such a valuable skill.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;[[Randall]] then insinuates that this is just a lie geologists &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;spread &lt;/ins&gt;to obtain free money from curious people looking to identify rocks&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, &lt;/ins&gt;and &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;implies &lt;/ins&gt;that the best way to get rocks identified is to pay the geologist you ask. As the old adage says, “If you’re good at something, never do it for free.” Geologists make their living identifying rocks (among other things), and while some scientists may be excited to discuss their work with a layperson in any context, a shrewd business sense would technically discourage one from “giving away” such a valuable skill.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;So in the second panel Cueball has wrapped the rock in a $5 bill, and claims that this is how he found it. Suddenly it is easy for Ponytail to identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency. Handing people &amp;quot;tips&amp;quot; like this is a typical trope. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;So in the second panel Cueball has wrapped the rock in a $5 bill, and claims that this is how he found it. Suddenly it is easy for Ponytail to identify that it looks like {{w|garnets}} in a {{w|mica schist}}, despite the fact that it was presumably not naturally surrounded by currency. Handing people &amp;quot;tips&amp;quot; like this is a typical trope. &amp;#160;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>141.101.98.226</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370529&amp;oldid=prev</id>
		<title>141.101.98.226: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370529&amp;oldid=prev"/>
				<updated>2025-03-27T09:56:14Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 09:56, 27 March 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l21&quot; &gt;Line 21:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 21:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The conversation continues in the title text, with Cueball asking about the economic price of the rock which, unfortunately for him, is quite [https://www.geologysuperstore.com/product/garnet-mica-schist/ low] as a hand sized sample. He may find this out &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;after first having paid &lt;/del&gt;Ponytail another $5 bill. Unfortunately for him, he cannot know whether this will be a good deal until he has already made it.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The conversation continues in the title text, with Cueball asking about the economic price of the rock which, unfortunately for him, is quite [https://www.geologysuperstore.com/product/garnet-mica-schist/ low] as a hand sized sample. He may find this out &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;by paying &lt;/ins&gt;Ponytail another $5 bill. Unfortunately for him, he cannot know whether this will be a good deal until he has already made it.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>141.101.98.226</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370528&amp;oldid=prev</id>
		<title>141.101.98.227: /* Explanation */</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3068:_Rock_Identification&amp;diff=370528&amp;oldid=prev"/>
				<updated>2025-03-27T09:55:23Z</updated>
		
		<summary type="html">&lt;p&gt;‎&lt;span dir=&quot;auto&quot;&gt;&lt;span class=&quot;autocomment&quot;&gt;Explanation&lt;/span&gt;&lt;/span&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr style=&quot;vertical-align: top;&quot; lang=&quot;en&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 09:55, 27 March 2025&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l21&quot; &gt;Line 21:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 21:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot;&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;This subverts the expected &amp;quot;correct&amp;quot; way to ask the question, which in these sorts of tips is often made by asking a slightly different question that gives a reason for the person who knows the information to become interested, rather than feel like they are being asked to do work for you. Examples of expected ways to get the information might be to ask preemptively, &amp;quot;Can you tell me where this rock came from?&amp;quot;. Or, to draw their attention by being intentionally wrong, i.e. &amp;quot;Why is this granite red?&amp;quot;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;−&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The title text &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;asks &lt;/del&gt;about the economic price of the rock which, unfortunately &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;(&lt;/del&gt;for &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;Cueball)&lt;/del&gt;, is quite [https://www.geologysuperstore.com/product/garnet-mica-schist/ &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;inexpensive&lt;/del&gt;] as a hand sized sample. He may &lt;del class=&quot;diffchange diffchange-inline&quot;&gt;first &lt;/del&gt;find this out after having paid Ponytail another $5 bill. Unfortunately for him, he cannot know whether this will be a good deal until he has already made it.&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;+&lt;/td&gt;&lt;td style=&quot;color:black; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;The &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;conversation continues in the &lt;/ins&gt;title text&lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;, with Cueball asking &lt;/ins&gt;about the economic price of the rock which, unfortunately for &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;him&lt;/ins&gt;, is quite [https://www.geologysuperstore.com/product/garnet-mica-schist/ &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;low&lt;/ins&gt;] as a hand sized sample. He may find this out after &lt;ins class=&quot;diffchange diffchange-inline&quot;&gt;first &lt;/ins&gt;having paid Ponytail another $5 bill. Unfortunately for him, he cannot know whether this will be a good deal until he has already made it.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;td class='diff-marker'&gt;&amp;#160;&lt;/td&gt;&lt;td style=&quot;background-color: #f9f9f9; color: #333333; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #e6e6e6; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Transcript==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>141.101.98.227</name></author>	</entry>

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