explain xkcd - User contributions [en]

Talk:958: Hotels

2014-12-12T20:44:23Z

199.27.133.94:

I hardly ever visit the same place twice, so I'd have to give hotels bad reviews ahead of time so that I get lower prices when I get there. Hell, why doesn't Black Hat do that? That way, he can avoid paying full price on his first visit to the hotel, which is what he wants, isn't it? The dishonesty of writing a bad review before he visits shouldn't be a deterrent to a person like him, so why not? '''[[User:Davidy22|{{Color|purple|David}}y²²]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 08:39, 9 March 2013 (UTC)

How did cue ball find out he liked it. Although it is only one person, knowing him directly gives him extra influence. I would say it is about the amount of influence of a review.--[[Special:Contributions/173.245.54.36|173.245.54.36]] 02:02, 15 February 2014 (UTC)
: Cueball seems to be friendly enough with Black Hat, so quite likely Black Hat simply mentioned that to Cueball before. [[User:Arifsaha|Arifsaha]] ([[User talk:Arifsaha|talk]]) 19:51, 21 November 2014 (UTC)
: While lying to Cueball about the quality of a hotel would reduce the overall demand, it is unlikely that both Black Hat and Cueball would both be travelling to the same city over the same date range, effectively meaning they are not competitors. Furthermore, if they were travelling together it is more likely that they would share a room, rental car or other resource, so having Cueball know his preferences benefits Black Hat. [[Special:Contributions/199.27.133.94|199.27.133.94]] 20:44, 12 December 2014 (UTC)

Is the title text a reference to a scene in a horror movie? [[User:Arifsaha|Arifsaha]] ([[User talk:Arifsaha|talk]]) 19:51, 21 November 2014 (UTC)

Talk:1453: fMRI

2014-12-05T10:45:13Z

199.27.133.94:

" ... and the magnetic field could rip off their jewelry if they are wearing ..." No, I think he's referring to the fact that the subjects were told to remove their jewelry before going into the machine, so that is still on their minds. --[[User:RenniePet|RenniePet]] ([[User talk:RenniePet|talk]]) 08:10, 28 November 2014 (UTC)

Which they are told because of the fields, which might rip and tear, or just heat up metallic objects... :) --[[User:Ergonomist|Ergonomist]] ([[User talk:Ergonomist|talk]]) 10:00, 28 November 2014 (UTC)

: Oh come on, it says "the parts of the brain associated with ... and the removal of jewelry". "Removal of jewelry" is something one does oneself. It's not something one typically thinks about as being done to you by magnetic waves. --[[User:RenniePet|RenniePet]] ([[User talk:RenniePet|talk]]) 10:23, 28 November 2014 (UTC)

Look what the Americans have done to the rather beautiful word 'Jewellery'! I thought it was a horrendous typo by Randall... but no. Lets rip out a couple letters so that a flowing word is reduced to sounding like a sullen teenager. --[[User:Pudder|Pudder]] ([[User talk:Pudder|talk]]) 10:29, 28 November 2014 (UTC)

Do not blame us - its not our fault. The root goes back to 1828, where a linguist named Noah Webster (of Webster's dictionary) laid out a new way to spell words differently in an attempt to differentiate Americans from Britons. It was a whole identity thing, and became extremely popular and took off. Oh well. I always liked the spelling of words with the "ou" in it (colour, etc). On the other hand, "jewellery" just looks rediculous. USA! USA! USA! {{unsigned ip|173.245.56.215}}

Not sure about 'warped tour' referring to 'cognitive confounders'. It's capitalised, so believe that it refers to the travelling music festival; the subject is displaying irritation with the operator constantly talking about their experience at The Warped Tour, just as you would if they were jabbering about last night's TV or the latest boyband. [[Special:Contributions/141.101.98.176|141.101.98.176]] 11:07, 28 November 2014 (UTC) IB

The Warped Tour reference may be a scientific in-joke: a key part of algorithms for analyzing MRI data is warping the images so the brain regions are lined up to compare them. Your brain and my brain and every other person's brain are not exactly the same size and shape. So an algorithm identifies key anatomical landmarks and warps the images of each brain to a standard brain map. Otherwise it would be impossible to compare brain scans -- pixels that represent your amygdala might be in the same location as pixels that represent your cerebellum.
[[Special:Contributions/108.162.219.221|108.162.219.221]] 16:17, 28 November 2014 (UTC)

Here is a small sample of the extensive scientific literature about biomedical image warping methods:

"warping tensors according to the spatial transformation that is calculated between the original and template spaces will also produce inaccurate results by altering the shape of individual tensors, thereby also altering measurements of local diffusivity and distorting inferences concerning tissue microstructure that are based on those measures of local diffusivity"
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2365743/
[[Special:Contributions/173.245.52.125|173.245.52.125]] 12:39, 1 December 2014 (UTC)

This is surely an example of the Observer Effect? http://en.wikipedia.org/wiki/Observer_effect_%28physics%29 [[Special:Contributions/141.101.98.160|141.101.98.160]] 19:31, 29 November 2014 (UTC)

..."In real experiments, reported activity patterns are always a result of subtracting average brain activity from many samples gathered during task from so called resting-state activity"
Actually, task activation is generally compared to some other control task or condition, rather than resting state, especially for a short-term memory study such as that referenced in the comic. For example some other task with matched stimulus presentation and response demands (i.e. press a button), but without any memory load. And if rest were used as the implicit baseline, it is extremely unlikely any actual subtraction would be done--rather the so-called resting state would be the implicit baseline state of a multiple regression, in which the task-related predictor variables are convolved with a canonical hemodynamic response function. {{unsigned ip|108.162.219.118}} [[Special:Contributions/108.162.219.118|108.162.219.118]] 18:57, 1 December 2014 (UTC)

Also, the concern with unremoved piercings would not be that they could be ripped off during scanning. A participant or patient would not be allowed in the MR room with a dangerous (i.e. large, ferrous metal) piercing, and if somehow one were it would be noticed prior to the initiation of any functional scans (the magnet is always on, so it would be ripped off or otherwise respond to the magnetic field while the participant was being positioned in the scanner bore). Rather, the concern here would be about the piercings heating up during scanning and potentially burning the participant, or potentially causing magnetic susceptibility artifacts in the acquired images (particularly for facial piercings). As precaution it is common to warn participants with unremoved piercings to be attentive to any heating sensation around their piercings and to notify MR technologists immediately if any heating occurs. [[Special:Contributions/108.162.219.118|108.162.219.118]] 18:57, 1 December 2014 (UTC)

When I remove jewelry, my main worry is that it will get stolen.

Talk:1402: Harpoons

2014-08-06T18:30:31Z

199.27.133.94: not rum, but brandy; not apollo 11, but apollo 8

I took the sentient space craft joke to be a reference to the movie "Dark Star".{{unsigned ip|199.27.128.123}}

Harpoon is a brand of rum. Did a bottle make it into space? [[Special:Contributions/108.162.219.196|108.162.219.196]] 12:55, 1 August 2014 (UTC)

: I tried to find who makes it but wasn't able to find a definitive source. I added http://www.harpoon-rum.eu/ for now but it would be nice to have the link to the canonical source. Any pointers? --[[User:Waldir|Waldir]] ([[User talk:Waldir|talk]]) 17:24, 1 August 2014 (UTC)

: It's only headcannon. (ref to xkcd #1401) A headcannon which fires a harpoon. [[Special:Contributions/108.162.216.80|108.162.216.80]] 17:52, 1 August 2014 (UTC)

Did this comic upload quite late in the day for anyone else? Is anyone else experiencing or did anyone else experience that "Latest Comic" is still going to 1401 as ix XKCD.com and XKCD.com/# {{unsigned ip|141.101.99.216}}

"This is obviously a joke, as sentient spacecraft cannot be created with current technology." Yeah, will need a citation on that... [[Special:Contributions/108.162.229.148|108.162.229.148]] 13:23, 1 August 2014 (UTC)

Definitely a joke. Appolo 12’s call sign was Yankee Clipper, and a clipper ship would not carry any harpoons.[[Special:Contributions/108.162.216.129|108.162.216.129]] 14:04, 1 August 2014 (UTC)
: I'd believe someone might have smuggled some Harpoon (or even any brand of) rum up there, then brought it back down with them, ingested or otherwise (thus the drop right after the mission). Alternately, "incident" could be something more along the lines of losing an empty bottle of rum during a spacewalk (farfetched as it may be) and it reentering the atmosphere(?) - probably no more than stories, though - nothing official probably exists about anything like that going up or down in any manner.{{unsigned|Brettpeirce}}

Moby Dick is, let's say, extremely far-fetched. It was not the ship that was hunting the whale and harpooning it by itself. --[[Special:Contributions/141.101.104.143|141.101.104.143]] 17:27, 1 August 2014 (UTC)

Could the Apollo 12 bump possibly be a reference to Futurama? "We're whalers on the moon, we carry a harpoon" [[Special:Contributions/199.27.130.246|199.27.130.246]] 15:51, 1 August 2014 (UTC)

Maybe it is a reference to a print ad by Bacardi-Martini, mentioned briefly in Buzz Aldrins book Magnificent Desolation. [[Special:Contributions/141.101.104.82|141.101.104.82]] 22:10, 1 August 2014 (UTC)

While it is more likely that a harpoon (or bottle of harpoon rum) went to space and returned with the Apollo 11 mission, the caption makes it sound like the harpoon was only in space for the duration of the incident. Might it have been created and destroyed there?[[Special:Contributions/108.162.219.171|108.162.219.171]] 22:54, 1 August 2014 (UTC)

The graph explicitly asserts the Apollo 12 incident caused a "harpoon" to be in space, but only for a short time. Therefore, the harpoon was destroyed in space or returned to earth. Perhaps harpoon rum ascended with the astronauts; then was consumed on the moon, burned up in earth's atmosphere, or returned with the astronauts. (DP) [[User:D peterson|D peterson]] ([[User talk:D peterson|talk]]) 14:49, 2 August 2014 (UTC)

;Whale killing
Saying "sailors would throw harpoons at a whale until it died" betrays a limited understanding of the process. Harpoons were barbed, and were meant to stick in the whale while it sounded (went deep.) A length of (about half-inch) rope kept the harpoon connected to the whaleboat. After the whale was exhausted (from towing the whaleboat while trying to shake off the harpoon? idk) the whaleboat could approach it, and the boatswain (''not'' the harpooner) would kill it with an unbarbed lance. Holling Clancy Holling's ''Seabird'' shows how it was done, with pictures and all. [[Special:Contributions/173.245.54.153|173.245.54.153]] 19:00, 1 August 2014 (UTC)

A picture of the whale ... http://www.esa.int/spaceinimages/Images/2014/08/Comet_on_4_August_2014_-_NavCam [[User:Spongebog|Spongebog]] ([[User talk:Spongebog|talk]]) 21:47, 5 August 2014 (UTC)

;Svend Foyn
Norwegian whaler Svend Foyn revolutionarized whaling by inventing explosive harpoon to hunt whales. He made whaling much easier and quicker. This method saved Norway from the famine thread in 19th century.{{unsigned|Multimotyl}}

;[Citation needed] joke.
I thought the sentence "of course, Rosetta is not sapient[Citation needed]", was sort of funny. It implied "of course, Rosetta is not sapient[or is it?]", adding a bit of humour and mystery to the explanation. {{unsigned ip|108.162.222.77}}
: i think it should be added back in, until somebody can cite a source showing that it is not sentient. [[User:Spongebog|Spongebog]] ([[User talk:Spongebog|talk]]) 02:24, 3 August 2014 (UTC)
;Suggestions for apollo 12 rum incident explanations
The Apollo Rum Incident is probably related to [http://www.arentfox.com/sites/default/files/pdf/ArentFox-Stories-01-Aiming-High.pdf Bacardi's advertising campaign] which altered the image of Buzz Aldrin (apparently from Apollo 11, not 12) to show him in shorts with a rum. I mean, unless it wasn't altered ... [[User:Arothfusz|Arothfusz]] ([[User talk:Arothfusz|talk]]) 16:44, 2 August 2014 (UTC) A. Rothfusz

Apollo 12 Preliminary Science Report NASA SP-235

"The Apollo 12 core-tube bit is far from optimal in design, but results in a smaller range of uncertainty. On the other hand, hammering a core into the soil is known to cause more disturbance to the sample than if the core is PUSHED into the soil at a HIGH, CONSTANT SPEED." ... (/rum horizontal)

[[Special:Contributions/108.162.246.207|108.162.246.207]] 16:47, 3 August 2014 (UTC)

'''Some Coincidences'''

1. A daily rum ration was provided in British navy until 1970: https://en.m.wikipedia.org/wiki/Rum_ration

2. Harpoon cocktail was updated in 1970 to include option of gin as base: http://www.diffordsguide.com/cocktails/recipe/2178/harpoon-cocktail

3. Apollo 12 actually flew in November 1969: https://en.m.wikipedia.org/wiki/Apollo_12

4. HMS Apollo Rum incident: http://idle-idle.blogspot.com/2008/02/hms-apollo-incident_15.html

5. There is a variety of hops called Apollo: http://beerlegends.com/apollo-hops

6. Harpoon is slang for harmonica, but there's no evidence a harmonica was on board.

7. The memorial 'Fallen Astronaut' was placed on the moon on August 1,1971 by Apollo 15 (the backup crew for Apollo 12): https://en.m.wikipedia.org/wiki/Fallen_Astronaut

8. August 1, 1971 has been called the "greatest day of scientific exploration that we've ever seen in the space programme - possibly of all time.": http://news.bbc.co.uk/onthisday/hi/dates/stories/august/1/newsid_4101000/4101579.stm

9. To harpoon, is to strike with a pointed instrument. Apollo 12 was struck by lightning (twice) upon takeoff. John Aaron's command "SCE to Aux" restored flight telemetry causing him to be labelled a "steely-eyed missile man": http://www.universetoday.com/98484/this-day-in-space-history-apollo-12-and-sce-to-aux/

10. Such an unusual event is called a "rum go": https://en.m.wiktionary.org/wiki/rum_go

11. The Apollo 12 landing area was, ironically, 'Ocean of Storms'. It landed 600 feet from Surveyor 3, making this the "only human artifact ever encountered in lunar exploration". Conrad intended on taking a self-portrait with Bean at Surveyor 3, but couldn't find the self-timer he had smuggled on board. When he later found it, he threw it as hard as he could out onto the moon (motivated like a harpooner).

12. All Apollo 12 astronauts were from US Navy.

13. Episode 2 of 'Futurama' centers on a visit to an Apollo landing site & includes a song about whalers on the moon, carrying harpoons: http://futurama.wikia.com/wiki/Whalers_on_the_Moon
Fry uses a harpoon to derail a 'moon buggy' from an amusement ride so he can use it to visit the landing site. Fry says "yee-haw!" driving the buggy over a crater.

14. The 'Apollo 13' cocktail is based on rum: http://www.drinksmixer.com/drink8506.html

[[User:Nathan Hillery|Nathan Hillery]] ([[User talk:Nathan Hillery|talk]]) 21:35, 3 August 2014 (UTC)

Harpoon Rum did go up with Apollo 12. Some miniatures were taken for Thanksgiving, but Charles Conrad order his crew-mates not to drink them. [[Special:Contributions/141.101.98.207|141.101.98.207]] 10:36, 4 August 2014 (UTC)
: Is there any online references for this claim? [[User:Spongebog|Spongebog]] ([[User talk:Spongebog|talk]]) 20:22, 4 August 2014 (UTC)
: I could find no references for that particular claim, but there is a [http://www.collectspace.com/ubb/Forum31/HTML/000305.html similar story] regarding holiday miniatures of brandy that were packed for Apollo 8, all of which came back to earth since Borman ordered his crew not to drink them. [[Special:Contributions/199.27.133.94|199.27.133.94]] 18:30, 6 August 2014 (UTC)

Apollo 12's landing site was also known as Oceanus Procellarum. http://www.nasa.gov/mission_pages/LRO/multimedia/lroimages/lroc_20091104_apollo12.html#.U9-P-xD5eM0 {{unsigned ip|108.162.216.102}}

All I can think of now is "We're whalers on the moon, we carry a harpoon". That'll be in my head for the rest of the day [[Special:Contributions/141.101.99.184|141.101.99.184]] 10:49, 5 August 2014 (UTC)

;Sapient vs Sentient

Sapient : To posses wisdom (http://en.wiktionary.org/wiki/sapient)

Sentient : To be self-aware (http://en.wiktionary.org/wiki/sentient)

Wisdom is not required to be "Motivated" (which is what the space craft is claimed to be) however it does need to be self aware -- and therefore sentient. [[Special:Contributions/199.27.133.6|199.27.133.6]] 14:19, 5 August 2014 (UTC)

: Seems right -- the use of "Sapient" to indicate awareness is a sci-fi only derived meaning [[User:Spongebog|Spongebog]] ([[User talk:Spongebog|talk]]) 15:39, 5 August 2014 (UTC)