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How does the speed of light limitation make sense for any reason but computational tractability? (locality=>parallelizable). (Not saying we're a simulation, there are other scenarios where the universe "runs" on some underlying "hardware".)
This kind of a circular argument, though, unless computation requires locality even in a universe without locality. Otherwise it's just saying that program locality implies hardware locality, which is just hopping to the next turtle.
Physics doesnt say it has a reason for there to be a limit, the space itself expands faster than light if your point is that the limitation points to a hardware to defines that limit.https://www.youtube.com/watch?v=n3oj1YKIeag …
A slow-expanding universe, with speed of light limitation on interaction, could still be run on locality-limited hardware. But computational complexity won't decline over time as it will in ours. Err, maybe from entropy.
Locality means you need indeed a form of 'network communication' between those localy-limited hardware machines, and the amount of information even with the speed of light limitation is absurdly high.
So i would want to hear ideas about that point before to the heat death part.
other facts of relativity point that way for example gradual slowdown of time near huge mass-energy concentrations
a.k.a lag
Singularities happening when you put too much mass in the same place? Sounds like a stack overflow to me. Black holes swallow mass because they store extra mass out of bounds.
Well, if there were no speed limit in the world in which the simulation is run, they could probably design computers without the need for parallelization. If there is a speed limit in that world, maybe they just want to make the sim world true-to-life?
Gerard t' Hooft made a paper where he derived a surprising amount of physics just from the assumption that reality is an efficient simulation. I don't think it was a serious paper though, he was just toying with the idea.
Or God loves you and wants to make a universe you can understand.
Locality seems elegant because it lets you reuse the same physics everywhere.
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