A mindbending logic puzzle.
A thousand people on the island, 900 brown-eyed and 100 blue-eyed; anyone who learns their own eye color must kill themself the next day; a visitor mentions that there is a blue-eyed person on the island; what happens? Nothing, you say, because they already know that? Wrong. Further details at the Terry Tao post linked above, but don't scroll down below the boxed description unless you want hints and/or spoilers. [more inside]
posted by languagehat
on Feb 15, 2008 -
A graphical dissertation
' "This Is Why I'm Hot
". Consider the reasoning, first, of just "I'm hot 'cause I'm fly":
Mims is hot because he's fly. But it raises the question: Does being hot guarantee one's being fly? "You ain't 'cause you not" would seem to clear that up:
It would appear that fly and hot are interchangable. If you are one, you are both; if you aren't at least one, you are neither.
posted by four panels
on Apr 23, 2007 -
The Einstein Puzzle
by Flowix Games is based on an old DOS game called Sherlock, which, in turn, was based on Einstein's (Supposed) Puzzle
). No, it's not Friday yet, and no, it's not Flash. It's a really logical game, and it's really damn hard. I've only won once, and that was within the first few times of playing. If you find it hard to figure out what's going on, read THIS
... It helped me to figure out EXACTLY what the hell was going on. The authors are Russian, and the help in the game may only serve to confuse you. ;) It's free, and runs on Windows, Mac, and Linux. I'm hooked on it, Dammit. :D
posted by Vamier
on Mar 22, 2007 -
"In 1953, while working a hotel switchboard, a college graduate named Shea Zellweger began a journey of wonder and obsession
that would eventually lead to the invention of a radically new notation for logic. From a basement in Ohio, guided literally by his dreams and his innate love of pattern, Zellweger developed an extraordinary visual system - called the “Logic Alphabet”
- in which a group of specially designed letter-shapes can be manipulated like puzzles
to reveal the geometrical patterns underpinning logic."
posted by vacapinta
on Apr 17, 2006 -
Douglas Hofstadter says
, "What troubles me is the notion that things that touch me at my deepest core -- pieces of music most of all, which I have always taken as direct soul-to-soul messages -- might be effectively produced by mechanisms thousands if not millions of times simpler than the intricate biological machinery that gives rise to a human soul.
". That was prompted by his reception to the output
of David Cope's project Experiments in Musical Intelligence
posted by Gyan
on Apr 11, 2006 -
The Logic of Diversity
"A new book, The Wisdom of Crowds
] by The New Yorker
columnist James Surowiecki, has recently popularized the idea that groups can, in some ways, be smarter than their members, which is superficially similar to Page's results
. While Surowiecki gives many examples of what one might call collective cognition, where groups out-perform isolated individuals, he really has only one explanation for this phenomenon, based on one of his examples: jelly beans [...
] averaging together many independent, unbiased guesses gives a result that is probably closer to the truth than any one guess. While true — it's the central limit theorem
of statistics — it's far from being the only way in which diversity
can be beneficial in problem solving." (Three-Toed Sloth)
posted by kliuless
on Jun 20, 2005 -
posted by reklaw
on Aug 10, 2004 -
Chicken or Egg?
Well .... neither, apparently.
"One little chap thought that you got orange juice from milk, because the milkman delivered orange juice to his door ".
Anyone else have amusingly misguided, yet (slightly) logical assumptions as a kid?.
posted by MintSauce
on May 2, 2002 -
"This Index of Logical Fallacies
looks like it should be required reading for anyone who wants to participate in online discussions. (Hello, Metafilterians? I'm looking in your direction...)"
This from someone named Meg Hourihan
. . .I found the link useful (very) while finding the linker very condescending, in this case. I guess we can consider ourselves slapped, huh?
posted by Danf
on May 1, 2002 -
What Color is My Hat?
I [heart] these mathematical conundrums -- simple, easy-to-state, seemingly obvious logic problems that have solutions that completely defy common sense. Here's another you can spring on a friend: "You want to fry up three pieces of french toast. You have a frying pan that is just large enough to accomodate two pieces of bread at a time. If it takes you 30 seconds to fry one side of bread, and each piece of must be fried on both sides, how long will it take you to cook up three pieces (assuming that the act of flipping a piece or adding/ removing it to or from the pan takes no time). Think about it. Answer inside.
posted by Shadowkeeper
on May 25, 2001 -
How Culture Molds Habits
is a fascinating article. Read this article, tally another point for nurture. I've long thought this was true, but Nisbett's supposedly gathered rather a lot of data proving it is so. The article raises some interesting parts of the study, but I think the ramifications bear some considering. I'd be interested in reading the full study when it's published, but I haven't a clue where to get the Psychological Review.
And can you imagine what the advertising execs will do with this stuff? Ads tailored to the way you think. Wheee. It does, of course, raise some fun questions about religion and politics.
posted by fable
on Aug 8, 2000 -
I just posted a pretty weak link on unsound and fallacious arguments. Here's a better one
. If you participate in debate on the net, you probably ought to read this, so you know *how* they're snowing you.
posted by baylink
on Apr 25, 2000 -