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Nov14-11, 03:29 AM
Sci Advisor
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P: 4,575
In canonical quantum gravity (which is a wide class of various approaches to quantum gravity), the wave function does not depend on time. So if the wave function is all what exists, then nothing depends on time. Or more precisely, nothing depends on a FUNDAMENTAL parameter of time. Yet clocks exist, so EMERGENT time still can be explained with such theories.