You shouldn’t try to pigeonhole quantum physics

Subatomic particles violate a basic principle underlying the concept of numbers and counting

pigeons

The pigeonhole principle states that if you put three pigeons in two pigeonholes, at least two of the pigeons end up in the same hole. A quantum analysis shows a way to violate the principle, by allowing three particles in two boxes with no two in the same box.

romana klee/Flickr (CC BY-SA 2.0)

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