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“Quantum particles do not behave like tennis balls, but like the quantum particles they are. To get from one place to another, they take all the possible paths in space and time as long as these paths link their starting point to their end point. The particle [...] literally went everywhere. Simultaneously. To the left and to the right of the post. And through it. And outside the room. And into the future and back - until the moment when it hit a detector on the wall.” — Christophe Galfard
Quantum particles do not behave like tennis balls, but like the quantum particles they are. To get from one place to another, they take all the possible paths in space and time as long as these paths link their starting point to their end point. The particle [...] literally went everywhere. Simultaneously. To the left and to the right of the post. And through it. And outside the room. And into the future and back - until the moment when it hit a detector on the wall.