Yes: Zero-sum solutions are not full solutions. There will be a solution that makes everyone happy. If someone isn’t, that’s a prima facie problem with the solution. Problems are soluble. Saying they aren’t is like saying there’s some physics beyond our grasp—supernaturalism.https://twitter.com/SamHarrisOrg/status/951276380997681152 …
Because you don’t have infinite amounts of time and memory. (But if you did, the set of unsolvable problems would still be many infinities larger.)
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Hm I see your point. But do you agree that our best physical theories imply that time travel into the past is possible?
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I am aware of the Tipler machine, but our currently best theories suggest that we cannot break the causal order, so it won't work. (FWIW, we could implement acausal computation on a Turing Machine by remembering past states and going back to them with future results.)
End of conversation
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