65% of people who have taken this simple logic test have failed. Can you be among the 35%? "What Does Mary Do?" http://bit.ly/ZH99xh
@LyonJE Anyway, the fact remains it's a standard test. For example, I think you'll find it features in the Routlege Encyc. of Philosophy...
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@PhilosophyExp It may be standard. It's also the classic error that logicians/mathematicians make, muddling everyday lang with formal logic. -
@LyonJE Yes, I know. But in this context the point is that sometimes we go wrong because we need to be thinking formally rather than...
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