Wikipedia:Reference desk/Archives/Miscellaneous/2017 April 25

= April 25 =

Three Chess Variants
I was wondering whether the following three chess variants already exist or have been previously studied, since I was not able to find them either listed in the linked article, nor using Google: — 79.113.220.209 (talk) 07:32, 25 April 2017 (UTC)
 * chess variant(s) lacking both kings.
 * chess variant(s) where the queen can, at first, move either only as a rook, or only as a bishop, and can start moving as s regular queen only after it captures its first enemy piece.
 * restricted or symmetric versions of shuffle chess, where the left side either mirrors or repeats the right side; or exhibits some other nice symmetrical pattern, like dragonfly (chess variant), for instance.
 * This discussion notes some possible games lacking a King, or where the King has been swapped out for another piece. Not much, but a start.  -- Jayron 32 14:20, 25 April 2017 (UTC)
 * There's a variant called "Knightmate" where the King is replaced by a knight, while the knight is replaced by a fairy chess piece called a Mann. -- Jayron 32 14:24, 25 April 2017 (UTC)

Indian woman has a fit when handed CD (gif)
This gif appears to show an Indian woman being handed a CD and then having a fit. Presumably the CD is believed to have some kind of special properties. What is going on here? --Viennese Waltz 08:12, 25 April 2017 (UTC)
 * It was an inheritance. &mdash;  O Fortuna   semper crescis, aut decrescis  08:24, 25 April 2017 (UTC)
 * Is that a joke? --Viennese Waltz 08:31, 25 April 2017 (UTC)
 * I do not make many jokes. But: '.' Cheers. &mdash;  O Fortuna   semper crescis, aut decrescis  08:48, 25 April 2017 (UTC)
 * It was not a request for opinion, prediction or debate. I am looking for factual answers from someone who is knowledgeable about this actual event. Thanks for nothing, --Viennese Waltz 08:52, 25 April 2017 (UTC)
 * You would need the sound to be sure, but throwing yourself to the ground and rolling about could well indicate mourning - so if the CD came from someone who had died that could well be a reasonable explanation. Wymspen (talk) 08:46, 25 April 2017 (UTC)
 * I suspect this woman suffered an epileptic fit. 79.73.128.211 (talk) 10:57, 25 April 2017 (UTC)
 * You might try asking at Know Your Meme. Carbon Caryatid (talk) 11:18, 25 April 2017 (UTC)

Leak-sealing car A/C coolant a good idea ?
My car A/C leaks out in about 3 months. I hate taking it in for service. I've recharged it myself. So, should I consider the version of coolant that comes with leak sealant ? Or does this ruin the A/C ? It's past the warranty end date so voiding the warranty is not a concern. Also, my car takes 2 containers of coolant, so if I do get it, should I get two with sealant or just one (and the other without) ? StuRat (talk) 17:34, 25 April 2017 (UTC)
 * My mechanic put UV dye into the coolant, so that the leaking spot(s) will be easy to find with a black light. Could be just a cheap hose or two needs to be replaced. Or, it could be something hard to replace, in which case sure, I'd try the sealant stuff, assuming the car is old anyway. But at least with the dye you'll know where the leak is and will also be able to confirm that you've fixed it.  Or, if you do go with the leak sealant stuff first, use the dye anyway, so that you'll know if it worked. SemanticMantis (talk) 17:54, 25 April 2017 (UTC)


 * As an aside: Take the auto to a specialist in A/C. They deal with all makes and models of every year - every day.  They know A/C inside out, as opposed to your regular local mechanics.  It may be less expensive in the long run. Let us know how you get on. Aspro (talk) 20:19, 25 April 2017 (UTC)


 * Each recharge costs me only $10 if I do it myself (with the non-sealant coolant), and I only need 2 a year since A/C is only needed here about 6 months out of the year. So, that's US$20 a year.  I have a hard time imagining any A/C repair costing as little as that. StuRat (talk) 21:09, 25 April 2017 (UTC)


 * First: Reckon it costs you more than $20 per year because you have the hassle of go getting and buying a can of referent each time. That takes time. Second: Then there is the time taken to recharging the system. Times two, that must take about nearly  hour  per year. Don't know what you consider an hours worth of your time is worth but we must be above   a yearly cost of a  $100 including cans of refrigerant. Plus you need your engine running the whole time  -which doesn’t run on fresh air. Can take it,  you have already  looked all over for lube oil leaking out. Buy  a children’s bubble blowing solution (better than washing up liquid etc.). Try it on the fill valve as it may have grit or muck  in it.  If that fails put the bubble solution all over the pipework.  Obviously one needs to have freshly recharged the system first. Anyway this is April – why do you need  A/C now? Take the driving belt off and it will improve your fuel economy. Aspro (talk) 22:49, 25 April 2017 (UTC)


 * It's supposed to be near 80°F tomorrow here in Detroit. And after I leave it parked in the sunlight it will be far hotter.  But the price I quoted is for the refrigerant.  The auto mechanic will no doubt take far more than an hour.  As for my shopping time, I buy it at the same place I go grocery shopping (Meijer). StuRat (talk) 22:59, 25 April 2017 (UTC)


 * See also externality. AC coolant isn't exactly nice stuff.  R-134a is better than what they used to use, but it isn't entirely inert.  -- Jayron 32 10:46, 26 April 2017 (UTC)


 * You should find out where it's leaking first. If it's leaking from a pipe fitting, fix that. If it's the evaporator, then you might be able to sealant it, but that's tenuous (evaporator leaks often get larger with time), yet it might also cost more than the car's worth to replace the evaporator (it can be a day's work just to change it, on some cars). If it's a rotating seal on the compressor though, internal sealants rarely achieve anything. Andy Dingley (talk) 10:59, 26 April 2017 (UTC)


 * Good info. Can you give me probabilities on each ? StuRat (talk) 13:35, 26 April 2017 (UTC)

Conerns/interests of children vs those of adults in Western culture
Does anyone know of a resource outlining how concerns tend to change as people become adults? And, at what ages do priorities typically change? For example, at what age to young adults generally start to care about new furniture?--Leon (talk) 18:34, 25 April 2017 (UTC)
 * This is a staggeringly huge section of modern psychology; developmental psychology is probably the best fit and the size of that article should give you a sense of how much there is to it. Your specific example draws in even more stuff about consumer behaviour, which is enormous on its own. Matt Deres (talk) 20:28, 25 April 2017 (UTC)


 * The most relevant consideration is at what age the youngster stops receiving financial support from the parents and moves out of the parental home. This varies historically (time) and by locale (place). Look at relevant parameters: the age limit for state compulsory public education, the age of majority (e.g. for signing contracts), age-related statutes restricting employment, minimum age for enlistment in the military (which provides employment, food, clothing and shelter for those eligible), etc. -- Deborahjay (talk) 14:02, 26 April 2017 (UTC)