[FRIAM] Time travel article

[Jochen Fromm]

Here is the link to the preprinthttps://arxiv.org/abs/2001.02511Quantum theory is mentioned in the article only in the introduction, although the place where Quantum Theory and General Relativity meet is where it gets interesting :-/Time travel is an interesting topic. Time travel forward in time (as it is described for example in the novel "Marooned in Realtime" by Vernor Vinge) is far more likely than time travel back in time. -J.
-------- Original message --------From: cody dooderson <d00d3rs0n at gmail.com> Date: 9/26/20  22:52  (GMT+01:00) To: The Friday Morning Applied Complexity Coffee Group <friam at redfish.com> Subject: [FRIAM] Time travel article An article came out recently about a proof that time travel would not lead to the butterfly effect. https://www.popularmechanics.com/science/math/amp34146674/paradox-free-time-travel-is-possible/ . This sounds great but does anybody understand it enough to explain it to a novice? Has this idea been around for a while, because Netflix's show The Umbrella Academy touches on it?The article says that the proof is backed up by research from Los Alamos and some experience with random walkers. I am pretty familiar with the latter. My experience is that some random walkers, a recursive path search, and patience can solve a lot of basic computer science problems. 
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