A particle, any particle, a photon, say, is not so much a particular object at a particular location in space and time as it is an aggregate, a total, a sum over histories.
Put another way: a photon takes every possible path through space-time to get from point A to point B. In a sense, every photon in the universe is everywhere in the universe at every time in the universe.
Or, put yet another way: there is only one photon in the entire universe, and that photon, spread across all of creation in a vast probabilistic smear, that one photon is responsible for all the light we see.
A particle, any particle, a photon, say, is not so much a particular object at a particular location in space and time as it is an aggregate, a total, a sum over histories.
Put another way: a photon takes every possible path through space-time to get from point A to point B. In a sense, every photon in the universe is everywhere in the universe at every time in the universe.
Or, put yet another way: there is only one photon in the entire universe, and that photon, spread across all of creation in a vast probabilistic smear, that one photon is responsible for all the light we see.
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