Schrödinger’s quantum waves describe the world at some kind of preexistence level. Before one measures a particle’s position there is no sense in even asking where it is. It does not have a definite position, only potential positions described by a probability wave that encodes the likelihood that the particle, if it were examined, would be found here or there. It is as if we compel particles to assume a position by looking at them, that there is a tangible physical reality only to the extent that we interact with the world by observing and experimenting. “No question, no answer!” is how
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