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“Hugo held up a finger. A slightly annoying, wait-a-minute kind of finger. Nora resisted a strong urge to grab it and twist it. 'Erwin Schrödinger...' 'He of the cat.' 'Yes. The cat guy. He said that in quantum physics every alternative possibility happens simultaneously. All at once. In the same place. Quantum superposition. The cat in the box is both alive and dead. You could open the box and see that it was alive or dead, that's how it goes, but in one sense, even after the box is open, the cat is still both alive and dead.” — Matt Haig
Hugo held up a finger. A slightly annoying, wait-a-minute kind of finger. Nora resisted a strong urge to grab it and twist it. 'Erwin Schrödinger...'
'He of the cat.'
'Yes. The cat guy. He said that in quantum physics every alternative possibility happens simultaneously. All at once. In the same place. Quantum superposition. The cat in the box is both alive and dead. You could open the box and see that it was alive or dead, that's how it goes, but in one sense, even after the box is open, the cat is still both alive and dead.