How can we prove that 1 electron was in 2 places at one time. Theoretically, how could we ever prove this? How would we distinguish between one electron being destoryed and 2 "partial" electrons being created with different properties than the first? | PhysicsOverflow

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How can we prove that 1 electron was in 2 places at one time. Theoretically, how could we ever prove this? How would we distinguish between one electron being destoryed and 2 "partial" electrons being created with different properties than the first?