explain xkcd - User contributions [en]

Talk:2325: Endorheic Basin

2020-06-27T00:43:30Z

162.158.158.167:

I think it is a funny comic, but the way water acts towards Beret Guy has nothing to do with what happens in an Endorheic basin. And also if he attracts water more than gravity, then a siphon is no help at all to get rid of the water. A pump would be needed that could make a larger pull then gravity. But the name is just something Beret Guy gives it. And since he is the only hydrophilic person in the world it is hard to say how it will work for him. But given that Randall named the comic it seems to me that either he did not care about this, did not think about it correctly, or else, also a possibility, I do not understand these concepts well enough --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 22:49, 26 June 2020 (UTC)

I sort of disagree with Kynde. I think the idea here is that Beret Guy is a local low point where water flows toward. It's not that he's "more attractive that gravity" but that from the perspective of the water he's now the lowest point around and thus it flows toward him. Like a Endorheic basin it can't flow out to somewhere else. This makes the siphon comment funnier in my opinion as they're suggesting that if then found an even lower point than Beret Guy they could siphons water off of him and to that lower point. Something that the water wouldn't do on its own because of "walls" in his water potential function. [[Special:Contributions/162.158.63.172|162.158.63.172]] 23:23, 26 June 2020 (UTC)Max

Do we have a category for comics where Randal is suspected of trolling the explainxkcd community? [[Special:Contributions/108.162.245.132|108.162.245.132]] 00:32, 27 June 2020 (UTC)
:"All Comics"? [[Special:Contributions/162.158.158.167|162.158.158.167]] 00:43, 27 June 2020 (UTC)

2325: Endorheic Basin

2020-06-27T00:41:17Z

162.158.158.167: /* Transcript */ There's a large variety of designs for 'wet rooms', but I don't think we can say that anything but a showerhead lies behind that curtain (which has no use in a showerless bath)

{{comic
| number = 2325
| date = June 26, 2020
| title = Endorheic Basin
| image = endorheic_basin.png
| titletext = My biggest fear is that colonial engineers will try to flood me to generate electricity. My biggest hope is that I'll develop sailing stones.
}}

==Explanation==
{{incomplete|Created by an ENDORHEIC BASIN. Does colonial engineers refer to something in mine craft? More on that part of the title text. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

Yet another comic with one of [[Beret Guy|Beret Guy's]] [[:Category:Strange powers of Beret Guy|strange powers]]. This time he attracts water so it flows to him rather than running out towards the nearby oceans. He thus claims he is like an {{w|endorheic basin}}, hence the title.

An endorheic basin is a limited drainage basin that normally retains water and allows no outflow to other external bodies of water, such as rivers or oceans, but converges instead into lakes or swamps, permanent or seasonal, that equilibrate through evaporation. The {{w|Caspian Sea}} in Europe is the largest such basins. It is debated if it is a lake or a sea (it is salty, but not connected to the oceans). If a lake it is the world largest lake.

An endorheic basin does though not suck water away from the sea. Rather rivers nearby flow to this low lying area inland, from where the water level will never rise enough for the water to continue to flow out into an ocean. Evaporation or drainage into the ground keeps the water level from reaching a height that can connect the water surface to a channel to any ocean.

So in this way Beret Guy's effect on water has nothing to do with the reason an endorheic basin is created.

In the comic [[Megan]] asks why he has water over his feet, and he thus explains the endorheic basin story. He even demonstrates by putting his hand close to a glass of water Megan is holding, showing her how he attracts some of the water out of the glass, and on to his arm.

He also shows how water will stay on him after a shower. This looks similar to what could happen in a space station if you have liquid water in zero gravity. The water sticks to any surface it encounters. See from instance the start of this video [https://www.youtube.com/watch?v=qeDJABZpVlI Water in zero gravity] and this one [https://www.youtube.com/watch?v=o8TssbmY-GM Wringing out Water on the ISS - for Science!] to see how water reacts to human skin in zero gravity. It is thus almost impossible from him to dry off after a shower.

It seems like the water stays away from his upper face, leaving his nose free to breathe. Else it would also be a very dangerous thing from him to take a shower.

In fact he needs someone to come with a {{w|siphon}} to get rid of the water. Here most likely in the form off a u-shaped pipe, that can be put into his water blob and then by sucking on the other end, keeping the bottom of that end below the blob, the water can be drained away. Given the fact that he attracts the water more than gravity, this method should not work at all.

But he really needs to get the water away from him. If he just leaves it there it will eventually evaporate. Water from rivers carry salt, and if they end up in a closed lake and that lake then evaporates, it can create {{w|Salt pan (geology)|salt flats}} (or salt pans), like those near {{w|Salt Lake City}} in {{w|Utah}}, e.g. the {{w|Bonneville Salt Flats}}. There may be a pun here, in that "flats" is a description of various types of footwear (among them: women's shoes that are not high-heeled and ballet shoes not specifically reinforced for advanced 'pointe' dancing), and the water would clearly leave the 'flats' on his feet.

If Beret Guy just leaves the water on him to dry out, he will get these salt flats, which is probably bad for his skin. But he has developed some previously and then harvested the minerals (because he asks Megan to let him know if she needs any minerals, implying he has plenty to give away due to those salt flats he has developed earlier).

In the title text, Beret Guy mentions his "biggest fear" due to his his water attracting abilities is being flooded to by "colonial engineers" in order from then to use him and the water to generate electricity, most likely {{w|hydroelectricity}}. Hydroelectricity is generated by the energy of falling or fast-moving water.

He then mentions that his "biggest hope", due to his ability, is that he will generate {{w|sailing stones}}. Sailing stones (also known as sliding rocks, walking rocks, rolling stones, and moving rocks), are a geological phenomenon where rocks move and inscribe long tracks along a smooth valley floor without human or animal intervention. The movement of the rocks occurs when large ice sheets a few millimeters thick and floating in an ephemeral winter pond start to break up during sunny days. Frozen during cold winter nights, these thin floating ice panels are driven by wind and shove rocks at speeds up to 5 meters per minute. It does not sound like something attracting water (even if creating salt flats) can accomplish.

This comic came out just a bit more than a month after the previous comic with one of Beret Guy's strange powers, [[2310: Great Attractor]], in which strange forces exerted a pull on Beret Guy. It does not appear that he himself is drawn to water, and we cannot determine if the Great Attractor is drawn to him, so Newton's Third Law may be constantly being broken, along with the more obvious scientific impossibilities that surround Beret Guy.

==Transcript==
:[Megan, holding a glass of water up in one hand is talking to Beret Guy, who has water surrounding his feet, with small droplets falling off the two small water triangles that cover his feet.]
:Megan: Why are your feet wet?
:Beret Guy: I'm an endorheic basin!

:[Megan looks down at her glass as the water in it is flying out towards Beret Guy's arm, which he has stretched out towards the glass.]
:Megan: Huh?
:Beret Guy: Nearby water flows toward me, not the ocean.
:Beret Guy: See?
:Megan: Oh, cool.

:[At the top of this panel is a box with text being said by Beret Guy to Megan. Beneath it is a depiction of what he is explaining to Megan. Beret Guy is shown standing in a bathroom, with a towel around his waist. Almost his entire body is covered completely in water, except most of his head above mouth level, and both his feet are beneath the water bubble. He yells to someone outside the bathroom. A shower-tray or partially sunken bathtub can be seen to the left with a closed shower curtain across it. To the right of him is the sink with mirror above it. Further right is the door. The floor is tiled.]
:Beret Guy - narrating: The most annoying part is drying off after a shower.
:Beret Guy: Can someone bring me the siphon?

:[Back to the situation from the first panel, although Megan has lowered her glass a bit. The glass seems to be as full as in the first panel though, even though Beret Guy now also has water on his arm where it was pulled out off Megan's glass in panel 2.]
:Beret Guy: But I have to get rid of it or I'll develop salt flats.
:Beret Guy: Anyway, let me know if you need any minerals!

{{comic discussion}}

[[Category:Comics featuring Megan]]
[[Category:Comics featuring Beret Guy]]
[[Category:Strange powers of Beret Guy]]
[[Category:Geology]]
[[Category:Geography]]

2325: Endorheic Basin

2020-06-27T00:18:16Z

162.158.158.167: /* Explanation */ A couple of additional points and a bit of rephrasing. Might come back and wikilink some things in and around what I wrote, if someone else doesn't do it first.

{{comic
| number = 2325
| date = June 26, 2020
| title = Endorheic Basin
| image = endorheic_basin.png
| titletext = My biggest fear is that colonial engineers will try to flood me to generate electricity. My biggest hope is that I'll develop sailing stones.
}}

==Explanation==
{{incomplete|Created by an ENDORHEIC BASIN. Does colonial engineers refer to something in mine craft? More on that part of the title text. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

Yet another comic with one of [[Beret Guy|Beret Guy's]] [[:Category:Strange powers of Beret Guy|strange powers]]. This time he attracts water so it flows to him rather than running out towards the nearby oceans. He thus claims he is like an {{w|endorheic basin}}, hence the title.

An endorheic basin is a limited drainage basin that normally retains water and allows no outflow to other external bodies of water, such as rivers or oceans, but converges instead into lakes or swamps, permanent or seasonal, that equilibrate through evaporation. The {{w|Caspian Sea}} in Europe is the largest such basins. It is debated if it is a lake or a sea (it is salty, but not connected to the oceans). If a lake it is the world largest lake.

An endorheic basin does though not suck water away from the sea. Rather rivers nearby flow to this low lying area inland, from where the water level will never rise enough for the water to continue to flow out into an ocean. Evaporation or drainage into the ground keeps the water level from reaching a height that can connect the water surface to a channel to any ocean.

So in this way Beret Guy's effect on water has nothing to do with the reason an endorheic basin is created.

In the comic [[Megan]] asks why he has water over his feet, and he thus explains the endorheic basin story. He even demonstrates by putting his hand close to a glass of water Megan is holding, showing her how he attracts some of the water out of the glass, and on to his arm.

He also shows how water will stay on him after a shower. This looks similar to what could happen in a space station if you have liquid water in zero gravity. The water sticks to any surface it encounters. See from instance the start of this video [https://www.youtube.com/watch?v=qeDJABZpVlI Water in zero gravity] and this one [https://www.youtube.com/watch?v=o8TssbmY-GM Wringing out Water on the ISS - for Science!] to see how water reacts to human skin in zero gravity. It is thus almost impossible from him to dry off after a shower.

It seems like the water stays away from his upper face, leaving his nose free to breathe. Else it would also be a very dangerous thing from him to take a shower.

In fact he needs someone to come with a {{w|siphon}} to get rid of the water. Here most likely in the form off a u-shaped pipe, that can be put into his water blob and then by sucking on the other end, keeping the bottom of that end below the blob, the water can be drained away. Given the fact that he attracts the water more than gravity, this method should not work at all.

But he really needs to get the water away from him. If he just leaves it there it will eventually evaporate. Water from rivers carry salt, and if they end up in a closed lake and that lake then evaporates, it can create {{w|Salt pan (geology)|salt flats}} (or salt pans), like those near {{w|Salt Lake City}} in {{w|Utah}}, e.g. the {{w|Bonneville Salt Flats}}. There may be a pun here, in that "flats" is a description of various types of footwear (among them: women's shoes that are not high-heeled and ballet shoes not specifically reinforced for advanced 'pointe' dancing), and the water would clearly leave the 'flats' on his feet.

If Beret Guy just leaves the water on him to dry out, he will get these salt flats, which is probably bad for his skin. But he has developed some previously and then harvested the minerals (because he asks Megan to let him know if she needs any minerals, implying he has plenty to give away due to those salt flats he has developed earlier).

In the title text, Beret Guy mentions his "biggest fear" due to his his water attracting abilities is being flooded to by "colonial engineers" in order from then to use him and the water to generate electricity, most likely {{w|hydroelectricity}}. Hydroelectricity is generated by the energy of falling or fast-moving water.

He then mentions that his "biggest hope", due to his ability, is that he will generate {{w|sailing stones}}. Sailing stones (also known as sliding rocks, walking rocks, rolling stones, and moving rocks), are a geological phenomenon where rocks move and inscribe long tracks along a smooth valley floor without human or animal intervention. The movement of the rocks occurs when large ice sheets a few millimeters thick and floating in an ephemeral winter pond start to break up during sunny days. Frozen during cold winter nights, these thin floating ice panels are driven by wind and shove rocks at speeds up to 5 meters per minute. It does not sound like something attracting water (even if creating salt flats) can accomplish.

This comic came out just a bit more than a month after the previous comic with one of Beret Guy's strange powers, [[2310: Great Attractor]], in which strange forces exerted a pull on Beret Guy. It does not appear that he himself is drawn to water, and we cannot determine if the Great Attractor is drawn to him, so Newton's Third Law may be constantly being broken, along with the more obvious scientific impossibilities that surround Beret Guy.

==Transcript==
:[Megan, holding a glass of water up in one hand is talking to Beret Guy, who has water surrounding his feet, with small droplets falling off the two small water triangles that cover his feet.]
:Megan: Why are your feet wet?
:Beret Guy: I'm an endorheic basin!

:[Megan looks down at her glass as the water in it is flying out towards Beret Guy's arm, which he has stretched out towards the glass.]
:Megan: Huh?
:Beret Guy: Nearby water flows toward me, not the ocean.
:Beret Guy: See?
:Megan: Oh, cool.

:[At the top of this panel is a box with text being said by Beret Guy to Megan. Beneath it is a depiction of what he is explaining to Megan. Beret Guy is shown standing in a bathroom, with a towel around his waist. Almost his entire body is covered completely in water, except most of his head above mouth level, and both his feet are beneath the water bubble. He yells to someone outside the bathroom. A bathtub can be seen to the left behind a closed shower curtain. To the right of him is the sink with mirror above it. Further right is the door. The floor is tiled.]
:Beret Guy - narrating: The most annoying part is drying off after a shower.
:Beret Guy: Can someone bring me the siphon?

:[Back to the situation from the first panel, although Megan has lowered her glass a bit. The glass seems to be as full as in the first panel though, even though Beret Guy now also has water on his arm where it was pulled out off Megan's glass in panel 2.]
:Beret Guy: But I have to get rid of it or I'll develop salt flats.
:Beret Guy: Anyway, let me know if you need any minerals!

{{comic discussion}}

[[Category:Comics featuring Megan]]
[[Category:Comics featuring Beret Guy]]
[[Category:Strange powers of Beret Guy]]
[[Category:Geology]]
[[Category:Geography]]

2324: Old Days 2

2020-06-26T22:23:18Z

162.158.158.167: /* Explanation */ Not as simple as that (except when it is), but anyone who remembers the days of 'demos' written from boot-level assembler squashed into a minimal package knows what is possible.

{{comic
| number = 2324
| date = June 24, 2020
| title = Old Days 2
| image = old_days_2.png
| titletext = The git vehicle fleet eventually pivoted to selling ice cream, but some holdovers remain. If you flag down an ice cream truck and hand the driver a floppy disk, a few hours later you'll get an invite to a git repo.
}}

==Explanation==
{{incomplete|Created by a GIT ICE-CREAM VAN. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}
In this sequel to [[1755: Old Days]], which was released more than 3.5 years ago, the conversation continues, as if no time has passed, between (young) [[Cueball]] and (old) [[Hairbun]] about computer programming in the past. As in the first comic in [[:Category:Old Days|this series]], Cueball, having only a faint idea of just how difficult and byzantine programming was "in the old days", asks Hairbun to enlighten him on the specifics. Hairbun promptly seizes the opportunity to screw with his head.

The claims:
* The cloud was smaller and called a "Mainframe" and was near Sacramento.
** This is a joke on many {{w|Cloud computing|cloud services}} replacing {{w|mainframe}}s. Both systems were or are used to provide an expansive quantity of computing capability by enabling users to use only some of the available resources, sharing with other users. In those early days, it is true that large mainframes would handle multiple people's jobs at once, using techniques like {{w|time-sharing}} (although they were not necessarily located near {{w|Sacramento}}, the capital of California.). What's more, the basic ideas behind how cloud computing are used go way back. {{w|Multics}} was an early time-sharing system designed to "support a computing utility similar to the telephone and electricity utilities". The idea was similar to the cloud, where anybody could just hook up and get computing service, as well as other services built into the mainframe. For this reason, many of the computer security concepts we have today - such as {{w|Kernel_(operating_system)|kernelized operating systems}} - come from early systems like Multics.
* It was on the state landline.
** In the days of mainframes, remote users often used {{w|landline}}s (i.e. hard wired telephone connections) to communicate, via {{w|dial-up modem}}s, and so users would have to disconnect for making phone calls. Even in the age of all landlines, there was never such a thing as "the state landline", imagined as an immense shared {{w|Party line (telephony)|party line}} to which the governor would have priority access for making calls.
* No memory protection; instead, people would call around to ask whether anyone else using an address, and Microsoft's early foothold in computing was because of {{w|Bill Gates}} lying about his usage of addresses.
** {{w|Memory protection}} protects storage from access by other programs or users. Many computer systems provide hardware and operating systems to support this. Hairbun is correct in that this sort of code was not well-developed early on. She claims that management of the memory was all done manually by agreement of the developers, and the only way to check if editing a particular address in the Mainframe was safe was physically asking all the other developers if they were already using it. In early PCs it was common to use specific memory locations, defined by the operating system or the hardware itself, to communicate with the operating system or perform particular functions such as direct graphical memory addressing rather than code compiling to pass through multiple Hardware Abstraction Layers. Her implication is that Bill Gates took advantage of this honor system to restrict people not working for {{w|Microsoft}} from making changes, allowing the company to take ownership of a lot of code - another fib with a grain of truth in it, based on Microsoft's excessive usage of limited standard-mandated pools. For example, out of 256 possible identifiers for {{w|partition type}} shared between all operating systems running on IBM PC compatible hardware, 65 entries are allocated to miscellaneous variants of FAT and NTFS systems, 38 of them originating from Microsoft itself - including esoteric variants like "Corrupted fault-tolerant FAT16B mirrored master volume."
* "Git" was a van that drove around gathering tapes to copy, and the term "pull request" came from the van physically pulling over when signaled with an air horn.
** {{w|Git}} is a {{w|version control system}}, which manages a centralized copy of a coding project to prevent and resolve conflicts from multiple people editing the project at once. It works by having individual contributors {{w|Pull request|pull}} the project onto their device, make their changes, and then push those changes back to be integrated into the master copy. The term "pull request" is primarily used after a user has pushed their new code and is requesting that those changes be integrated into the primary codebase, i.e. that the primary developer would pull those changes into the main branch. Bulk data used to be stored on {{w|magnetic tape}}; in order for version control to exist at this time, there would have to be a master tape that was copied and physically distributed to each contributor, and then the edited tapes would be gathered afterward and conflicts resolved. Hairbun claims that Git provided this service back then using vans. In reality, Git did not exist until 2005, long after digital computers and networked servers became widely accessible and the "early internet" was history. Other systems for providing the same functionality existed for decades before this, with {{w|Source Code Control System}} (SCCS) having been released in 1972. Even this software was implemented primarily for multiple users accessing the same system, rather than users on separate, unconnected ones. Physically carrying storage devices around ({{w|sneakernet}}) has sometimes been used where electronic communication or bandwidth was not available. For example, motorcycle drivers on a regular route, carrying flash drives to remote communities (see {{w|delay-tolerant networking}}).
* Before terminals we all used punch cards, which were originally developed to control looms, and so the Mainframe would produce sweaters when code was run.
** Another initial truth going into complete nonsense. It is true that some looms were controlled by {{w|punch card}}s (dating back to 1745), and so were early computer precursors. At the same time {{w|Charles Babbage}} used them around 1830 to control his {{w|Analytical Engine}}. However, Hairbun's statement is that because of this, the ''same'' punch card machines would run both ''simultaneously'', such that feeding a set of cards to compile code would necessarily cause a sweater to be produced by the connected loom, which was then sent to the developer. For one: a loom doesn't produce sweaters, but a piece of fabric (which is often patterned if punch cards are involved). And it's not likely that any punch patterns used in computer coding would be interpretable as a suitable pattern for a sweater.
* (From the title text) You can still hand in a floppy disk to an ice cream truck and get an invite to a git repo a few hours later.
** Git repo is short for Git {{w|Repository (version control)|repository}}, the place where all the files associated with a project are stored. Hairbun tries to convince Cueball that modern ice cream truck drivers service Git in the same way she says the vans did before and that it's still possible to give them a {{w|floppy disk}} (a magnetic storage device) in order to gain access to a repo. The ice cream industry has no connection to computing.{{Citation needed}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[In a slim panel, Cueball and Hairbun are walking together to the right. Hairbun has her palm raised.]
:Cueball: What was the Internet like in the olden days, for a developer?
:Hairbun: Oh, things were very different.

:[Cueball and Hairbun have stopped walking. Zoomed in on Hairbun.]
:Hairbun: The cloud was a lot smaller. It was called a "mainframe" and it was near Sacramento.
:Hairbun: It was on the state landline, so the whole industry paused when the governor had to make a phone call.

:[Zoomed back out. Hairbun has her palm raised.]
:Hairbun: There was no memory protection. If you wanted to write to an address, you would call around to ask whether anyone else was using it.
:Hairbun: Often Bill Gates would say he was, even when he wasn't. That's how Microsoft got its early foothold.
:Cueball: Wow.

:[Zoomed back in Hairbun. Cueball responds off-screen.]
:Hairbun: "Git" was originally a van that circled around gathering data tapes to copy and distribute. We all took turns driving it.
:Hairbun: When you saw it coming you'd blow an air horn to request that it pull over.
:Hairbun: That's where "pull request" came from.
:Cueball (off-screen): Oh, neat!

:[Cueball and Hairbun continue walking to the right. Hairbun has her palm raised.]
:Hairbun: Before terminals, we all used punch cards, which were originally developed to control looms.
:Hairbun: Early mainframes would produce a sweater each time you ran your code.
:Hairbun: Eventually we got them to stop. We had enough sweaters.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Hairbun]]
[[Category:Old Days]]
[[Category:Comics sharing name|Old Days]]
[[Category:Comics featuring real people]]
[[Category:Programming]]
[[Category:Computers]]
[[Category:Version Control]]

Talk:2323: Modeling Study

2020-06-23T13:19:03Z

162.158.158.167:

Also known as

''I still have no clue about my subject, partly because I devised this study when I knew even less, but I need to write a paper anyway or I can never finish my PhD programme ...''

vs.

''I have now fiddled four years with my model assumptions to get the data to fit without, well, fiddling with the data, so please bear with me and my paper, and for heavens sake graduate me so I can save what is left of my soul and sanity ... '' ;-) --[[Special:Contributions/162.158.94.94|162.158.94.94]] 20:23, 22 June 2020 (UTC)
: One of my friends who studied thermal engineering remarked that if his model agreed with the test data to within ten degrees, it was acceptable, but if it agreed to less than five degrees, he was suspicious, because it was probably over-fit to the peculiarities of his thermal chamber, thermocouple placement, and so on, and less applicable for the system's real operational environment. --[[User:NotaBene|NotaBene]] ([[User talk:NotaBene|talk]]) 23:40, 22 June 2020 (UTC)
::We got trolled by our physics teacher in high school, during a calorimetry experiment (where you measure the changes in temperature of a system). All our measurements were way off from theoretical results, so we "adjusted" the reported values to make them fit the expected curve. Unfortunately, the prof knew that the thermometers were too inaccurate to produce precise results, so it was more of a test of our honesty, which we all failed miserably :-/[[Special:Contributions/162.158.158.167|162.158.158.167]] 13:19, 23 June 2020 (UTC)
:I once proof read a master thesis, where an experimental setting to optimize a problem in certain network arrangements was set up (basically a laboratory with 15 desktop PCs, communicating with each other on a specific protocol, etc.). The guy who wrote it found out on the first afternoon after setting it up, that the professor who found and described the problem he was about to tackle made a mistake, and the problem didn't exist. By that time he had already - due to university standards - handed in the name of his thesis. While negative results in research are also good results, the problem is, that by the same standards of his university his master thesis had to be a certain size - if I remember correctly, at least 50 pages in small font, excluding data and images - he managed to stretch his afternoons work and some subsequential tests on it to the required number of pages though. I am sure there is a lesson to be learned here, but... I haven't figured it out yet. --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 05:37, 23 June 2020 (UTC)
::well, I gues the most important lesson would be "minimum length of text" is not a good requirement for any academic work. ;) [[User:Elektrizikekswerk|Elektrizikekswerk]] ([[User talk:Elektrizikekswerk|talk]]) 06:50, 23 June 2020 (UTC)

Various "<Problem> Denier" groups, (Climate Change, Covid, other things not ''necessarily'' starting with "C") do tend to lose their shit over "models" that aren't right (whether 1% out or 50%, they'll take any 'error', or just the failure to model what happened later ''because'' the model was heeded and behaviours changed to avoid the outcome) ironically using their clutched-at-straws to model all ''future'' models as wrong/intentionally-misleading-for-nefarious-intent. They also misunderstand the models (witness them dragging out old "85% chance Hillary will win" predictions against the roughly(-and-slightly-more-than) 50% of the votes she got - a different measure and far from incompatible with the other), whether innocently or deliberately, to 'prove' their point. And that's just done by regular Joes/Josephines. I'm sure you can be far more competently incompetent in your modelling (i.e. sneak sneaky shit past more and more learned people) if you're an actual modeller yourself who feels the need to drive towards an end for which you then look for the means. (Or modes, or medians.) [[Special:Contributions/162.158.155.168|162.158.155.168]] 11:58, 23 June 2020 (UTC)

Talk:2321: Low-Background Metal

2020-06-18T08:51:09Z

162.158.158.167:

I can't help but notice that the basic premise of this comic is very much like the reason for going back to 1970 in ''Avengers: Endgame'', when they needed more Pym particles for time travel. I wonder if Randall re-watched it again recently? — [[User:KarMann|KarMann]] ([[User talk:KarMann|talk]]) 17:10, 17 June 2020 (UTC)

Oh, that's new to me, that they use roman ships to get to higher quantities of lead. For Steel they use German ships. after world war I, the german high seas fleet was captured and put under arrest in scottish waters. To not allow the enemy to utilize the ships, they all sank themselfes. {{w|Scuttling_of_the_German_fleet_at_Scapa_Flow|wikisource}} --[[User:Lupo|Lupo]] ([[User talk:Lupo|talk]]) 05:46, 18 June 2020 (UTC)

== Drawing ==

There's one leg of the time-machine missing from the 3rd panel. (or is it the side of a base?) --[[Special:Contributions/162.158.155.126|162.158.155.126]] 19:57, 17 June 2020 (UTC)

== Mined lead ==

Pb-210 (half-life 20.4 years) is a decay product of radon, and thus accumulates everywhere that is exposed to the atmosphere or where radon seeps from the ground. I suspect it could be a contaminant in lead from some lead mines, but wasn't able to find any references [[User:ShadwellNH|ShadwellNH]] ([[User talk:ShadwellNH|talk]]) 20:00, 17 June 2020 (UTC) Paul

== One use only? ==

The way I understand it, the time machine is one-use unless you find other Low-Background Metal. If you find it, you can make more trips. It would appear that the trip is successful.
--[[Special:Contributions/188.114.103.129|188.114.103.129]] 01:31, 18 June 2020 (UTC)

So you'd say a car is also one-use, unless you find a gas station? [[Special:Contributions/162.158.158.167|162.158.158.167]] 08:51, 18 June 2020 (UTC)

== Real life use of this lead? ==

Does anyone know whether there is any truth whatsoever to scientists using lead from sunken ships to shield delicate equipment? Obviously not time machines, but there are some pieces of equipment that might be sensitive to radiation.

Also, would lead that was in the ocean actually be safer from nuclear fallout than lead that was underground and mined after the nuclear testing ended? [[Special:Contributions/108.162.216.172|108.162.216.172]] 03:31, 18 June 2020 (UTC)
: Yes. At least it is done with steel. [https://hackaday.com/2017/03/27/low-background-steel-so-hot-right-now/][https://www.good.is/articles/the-search-for-low-background-steel][https://www.stainless-steel-world.net/mobile/webarticles/joanne-mcintyre/disappearing-warships-scavengers-raid-war-graves-for-low-background-steel.html] [[Special:Contributions/172.69.33.129|172.69.33.129]] 04:50, 18 June 2020 (UTC)

: Low Background Lead is also used, mentioned in the Good article. The equipment that need this stuff is mostly radiation sensors, very precise ones that can detect even smallest amounts of radiation. And for the last Question, you can't find pure natural lead, its mostly contaminated with radioactive elements (most lead in the universe results from decay chains). And common lead is made through recycling. Ancient lead from roman ships had enough time for the radioactive elements to decay into stable lead. --[[Special:Contributions/141.101.105.114|141.101.105.114]] 06:12, 18 June 2020 (UTC)

== May be complicated ==

The 1968 Story [https://scifi.stackexchange.com/questions/109243/modern-military-jet-goes-back-to-world-war-i Hawk among Sparrows] discusses the problems modern war hardware may have when used against old tech. -- [[Special:Contributions/141.101.76.82|141.101.76.82]] 07:39, 18 June 2020 (UTC)

2279: Symptoms

2020-03-11T21:24:32Z

162.158.158.167:

{{comic
| number = 2279
| date = March 11, 2020
| title = Symptoms
| image = symptoms.png
| titletext = This medicine says it may cause lightheadedness, dry mouth, and blurred vision, but my head feels incredibly heavy, water is pouring from my mouth, and I can see individual hummingbird wingbeats, so I think I'm fine.
}}

==Explanation==
{{incomplete|Created by a PERSON WITH ICY SKIN. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

The comic states that the symptoms of a disease - perhaps Covid-19 as many recent comics have been on this subject - are fever, fatigue and dry cough. Megan is reassured that she doesn't have it, because her symptoms are the opposite - and equally bad.

An alternative is that Megan is being sarcastic, considering that these could be symptoms of a whole host of medical situations, many of which are not concerning at all, and not nearly as bad, or a rare, as the ones she is describing.

The title text expands on this joke as someone doesn't have common side effects but the opposite, which they should see a doctor for. It also reflects on the whole concept of symptom/side effect warnings themselves as often people have no good frame of reference for when a particular symptom is actually abnormal. It is often easy for one to believe they match some or all of a list of symptoms because for someone to be absolutely sure they do not have the a specific symptom, they would need an almost comic level of "normality".

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

[Cueball and Megan stand facing each other, with Cueball looking at his phone.]

:Cueball: It says here common symptoms include shortness of breath, fever, fatigue, and a dry cough.
:Megan: That's reassuring to me, a person with powerful lungs, icy skin, frenzied energy, and an '''''incredibly''''' wet cough.

{{comic discussion}}

[[Category:SARS-CoV-2]]