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1. Robert McNees (mcnees@mastodon.social)'s status on Friday, 10-Nov-2023 18:15:09 UTC Robert McNees

   2) ...in spacetimes with closed timelike curves. It posits that any event which would lead to a paradox must have probability zero.

   • Robert McNees (mcnees@mastodon.social)'s status on Friday, 10-Nov-2023 18:15:09 UTC Robert McNees

     in reply to

     1) Igor Dmitriyevich Novikov, who introduced the concept of the white hole in 1964, was born #OTD in 1935. He also introduced a self-consistency principle for time-travel...

   • The Geoff (_thegeoff@mastodon.social)'s status on Friday, 10-Nov-2023 18:32:38 UTC The Geoff

     @mcnees Can you do a thread about closed timelike curves sometime? Curious about the history.

   • Robert McNees (mcnees@mastodon.social)'s status on Friday, 10-Nov-2023 19:24:15 UTC Robert McNees

     in reply to

     • The Geoff

     @_thegeoff I mean if I understood them well enough I could in principle do it any time :)

   • Robert McNees (mcnees@mastodon.social)'s status on Friday, 10-Nov-2023 19:24:53 UTC Robert McNees

     in reply to

     • The Geoff

     @_thegeoff The answer is that yes, if I find a chance to learn a bit more I will. I don't really know that much about the development of the ideas!

   • The Geoff (_thegeoff@mastodon.social)'s status on Friday, 10-Nov-2023 19:48:06 UTC The Geoff

     in reply to

     @mcnees Does General Relativity not allow time travel if the *entire universe* is rotating or something? I may have misread it, but there's some sort of maybe-paradox-free time travel geometry?

   • Robert McNees (mcnees@mastodon.social)'s status on Saturday, 11-Nov-2023 00:47:19 UTC Robert McNees

     in reply to

     I had very high hopes for this one, I thought it would be exactly the sort of joke mastodon would appreciate!

   • Jason Parker-Burlingham 🏳️‍🌈 (jasonp@social.horrorhub.club)'s status on Saturday, 11-Nov-2023 01:29:51 UTC Jason Parker-Burlingham 🏳️‍🌈

     in reply to

     @mcnees I guess the joke was just before its time