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Originally Posted by GUILLE According to QM we CAN be at two places at the same time |
Only if you are a boson. Since we are fermions and obey Pauli's exclusion principle, we cannot be in many places at once. Light is a boson and it can be in all places at the same time. Its applications are in the technology of the LASER. Population inversion is equivalent to having all photons sharing a common point of spacetime. That is to say the photon there is the same as the photon here or any photon anywhere.
A particle can choose only if it loses its identity and remain stationary by not choosing or moving or just the opposite of not choosing at all. So that all particles are the same any direction you look, you are just looking at yourselves like looking into an enclosed mirror all around you, up-down, left-right, for-back.