This is a lovely lecture by the legendary topologist Bill Thurston, in which he illustrates the cyclic branched cover of a knot by interpreting the knot as a po

This is a lovely lecture by the legendary topologist Bill Thurston, in which he illustrates the cyclic branched cover of a knot by interpreting the knot as a portal to other universes. I don’t think the idea has ever been used in a real video game, but there have been a few demos: the most impressive is the VR demo [0], which is described in detail with lots of background in [1]. There’s also a pretty comprehensive thread on Twitter [2], where @RAnachro collects a lot of videos and demos of knotted portals. [0] https://www.imaginary.org/program/knotportal https://www.imaginary.org/program/knotportal [1] https://link.springer.com/article/10.1007/s00283-020-10028-8 https://link.springer.com/article/10.1007/s00283-020-10028-8 [2] https://twitter.com/RAnachro/status/1362478176874754050 https://twitter.com/RAnachro/status/1362478176874754050