This is how Ed Fredkin explained the nature of energy to me: There are two kinds of energy. Momentum is information disparity in space, and matter is information disparity in time. I don't even know if it is true, but it is a gem of deepest insight, if you can see it.
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(In Fredkin's cosmology, space is a lattice that stores information at its nodes, and time results from the succession of states of that lattice. Mass is a periodic in-place fluctuation, due to a disparity to the adjacent states, and momentum is a translational fluctuation.)
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Replying to @Plinz
Most likely ruled out (or heavily constrained) by bounds on space time defects
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Replying to @zauberlaus_
Do you suggest that space time is too messy to support his deterministic automata dynamics, or more messy than suggested by his model, or not messy enough?
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Replying to @Plinz
I mean that it is exceedingly hard to get relativity emerge healthy from these types of models
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Fredkin claimed to have found a solution for Lorentz invariance when I asked him about it, and I think I can see one, too, but the models will be causality preserving (no time-like loops).
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