Some theoretical physicists have demonstrated there are some theoretical models of the universe consistent with current observations that aren’t just regular spacetime.
There’s no evidence _for_ exotic spacetime. Just there isn’t evidence that rules it out.
The rest of it is an ELI5 explanation of topology concepts and pablum about how important this research is.
> Because of the many twists, the universe could contain copies of itself that might look different from the original, making them less easy to spot in maps of the cosmic microwave background.
