Hugo Mercier, Guy Politzer, Dan Sperber (2017) What causes failure to apply the Pigeonhole Principle in simple reasoning problems? Thinking & Reasoning 23(2), 184-189.

Abstract: The Pigeonhole Principle states that if n items are sorted into m categories and if n > m, then at least one category must contain more than one item. For instance, if 22 pigeons are put into 17 pigeonholes, at least one pigeonhole must contain more than one pigeon. This principle seems intuitive, yet…