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Jens Lundell
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(OP) As famously known, Feynman states that the single electron used in the double-slit experiment takes every possible path simultaneously before coming to the final goal which is the phosphorescent screen. My question is: How sure are we that this electron really is the one that left the "machine"? Please explain shortly if this is proved. Sorry if the question (or the english) sounds stupid, I'm a newbie to both the quantum mechanics as well as english. :)
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