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black hole 123
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this question is a bit philosophical...
in general relativity time "doesn't exist", and all of spacetime is already a preexisting pseudo riemannian manifold. however experiments have only shown time run at different rates, not that spacetime is preexisting.
in our ordinary experience time is like a flowing river and we are like boats being carried by the flow, and future is "created" as we go along. quantum mechanics also supports this view of time, the future is created as we go because wavefunction collapse is random.
https://en.wikipedia.org/wiki/Problem_of_time
how do these two contradicting things make sense? is our understanding of time far from complete? i don't understand the stuff about hamiltonian in the wikipedia article so can someone give me a non technical explanation thanx
in general relativity time "doesn't exist", and all of spacetime is already a preexisting pseudo riemannian manifold. however experiments have only shown time run at different rates, not that spacetime is preexisting.
in our ordinary experience time is like a flowing river and we are like boats being carried by the flow, and future is "created" as we go along. quantum mechanics also supports this view of time, the future is created as we go because wavefunction collapse is random.
https://en.wikipedia.org/wiki/Problem_of_time
how do these two contradicting things make sense? is our understanding of time far from complete? i don't understand the stuff about hamiltonian in the wikipedia article so can someone give me a non technical explanation thanx