3 ms·
> every moment of possible universe has always existed and will always exist, but over time they switch from "off" This also seems to imply the MWI forces us
by meroes 5y ago
> every moment of possible universe has always existed and will always exist, but over time they switch from "off"
This also seems to imply the MWI forces us into block time, then having to recover the experience of time flowing for finite observers like us. The MWI-verse has always existed, as you say, so I'm having a hard time imagining what you mean by dynamical "switching", unless you mean the feeling/appearance of. It would have to be the appearance of something happening, an appearance of time flowing when it is block. I'm sure we can imagine MWI can explain how observers like us in the MW universe experience a flow of time. This still may be simple in the long run.
- breuleux 5y agoWell, the amplitudes would change: all possible universes "exist", but their existence is not binary, it has a complex amplitude. And the norms of the amplitudes of all universes sum to one. So basically if you have three universes, at time t you might have A:0.5, B:0.25, C:0.25, and then at time t+1 you might have A:0.30, B:0.40, C:0.30. Thus the "flow" of time is really just the flow of amplitudes from certain branches to certain others. The idea that something does not "exist or not exist", but rather "exists at amplitude 0, amplitude 0.5, amplitude -i, etc." is kind of a mind screw, but that's the suggestion. This being said, there might be a steady state or fixed point where all amplitudes remain constant. Not sure how we could know if there is one or if we're in it, but that would be interesting.