We know enough to know that macroscopic higher demential spaces connected to our apparently 3 dimensional space aren't a thing.
Having limits to our understanding doesn't mean all things are equally possible.
For instance there aren't any 2 dimensional beings because it's impossible to slice a mathematical pure plane and have macroscopic objects exist in that plane even fields surrounding a singular atom exist in 3d.
For sure, what I mean is they could be playing with different universes. Or found a way to manipulate time. It’s crack pot stuff but it all looks like it till it happens. Show a cave man an DJI drone being controlled and sending back live videos, they will also say it was impossible due to their understanding
Having limits to our understanding doesn't mean all things are equally possible.
For instance there aren't any 2 dimensional beings because it's impossible to slice a mathematical pure plane and have macroscopic objects exist in that plane even fields surrounding a singular atom exist in 3d.