If the universe is infinite then there is a planet where, by sheer chance, magic spells always work and technology always breaks down.
@MoralOfStory 1) Choose a setup for your bizarre event. 2) Run physics backwards in time. 3) You now have initial conditions that create it.
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@CurlOfGradient e.g. in GOL there are clearly positions for which there are no t-1s... -
@MoralOfStory In physics, as long as the position and momenta of every particle are defined e.g. then you can find paths forwards and back. - 15 more replies
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@MoralOfStory Assuming all initial conditions occur in your infinite number of universes, this will happen.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@CurlOfGradient there's no reason to believe that you'll always be able to compute a t-1 step? -
@MoralOfStory The laws of physics are time-reversible, though.
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