Re:A Simple Logical Puzzle That Shows How Illogical People Are
by breadbox on Friday May 22, 2015 @02:51PM
(#9590226)
In my experience, that's not the case. People (or at least people not primed to take a tricky-logic-puzzle stance) think they understand the problem just fine, and quickly give the wrong answer. Asking about it afterwards (once you get past the defensive denials et al), it's usually revealed that they did in fact understand the problem. They just failed to grasp what a proof/disproof actually requires, because they've never had to think too deeply about the issue before.
Re:A Simple Logical Puzzle That Shows How Illogical People Are
by coldtea on Friday May 22, 2015 @09:00PM
(#9591603)
Actually the way they mean it is simple:
IF even THEN blue.
To show that the rule holds then you need to check:
8 (it's even, so should be blue. Is it?)
and green (because if it's even, then it invalidates the rule that it should have been blue on the other side).
The other cards/numbers don't matter as to the validity of the rule.
Re:A Simple Logical Puzzle That Shows How Illogical People Are
by svachalek on Friday May 22, 2015 @04:43PM
(#9590820)
The non-commutative interpretation requires that you also flip the green card. I think a lot of people failed the question even if correctly interpreting the words.
Re:A Simple Logical Puzzle That Shows How Illogical People Are
by wutbrodo on Friday May 22, 2015 @02:38PM
(#9590152)
It's only unclear if you don't understand that if/then is not commutative. If I said that x/y = z, it wouldn't be "unclear" whether that implies that y/x = z, because the division operator simply isn't commutative.
It could be non-commutative, which is how the professor set it up. (Even = blue on back side. Flip 8)
It could be commutative (I have to prove above + blue = even. Flip 8 and blue. How most people interpret)
It could even be strict (even = blue && odd != blue && green != even. Flip all)
As phrased, it's super vague, and since it's implied the problem is tricky, most people select the goal that at least includes the words (even + blue). The double brain mumbo-jumbo in the article seems like garbage. It's just a statistical goal assignment task with fuzzy bounds.