Photons reveal a weird effect called the quantum pigeonhole paradox
Three quantum ‘birds’ can fit in two ‘pigeonholes’ without any two being in the same hole
![two pigeons, each sitting in a cubbyhole](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2019/02/020719_EC_quantum_pigeonhole_feat.jpg?fit=860%2C460&ssl=1)
STRANGE BIRDS Two pigeons can sit comfortably in two holes, but add a third bird and they’ll have to share. But three quantum particles can occupy two states without any having the same state, scientists have shown.
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