if black holes create a rip in space do to there massive gravity couldn't they lead out of our dimension and mabe let us travel to other dimensions? wouldnt it also let is make short cuts in space by going in one black hole and coming out another vea the area out of our galaxy or the void im going to call it. (this is all assuming that we can find a way to exscape black holes and we find a way not to get killed in the proccess)
also alot of sceintists belive that our universe is a membrane and membranes can be riped if aplied enough force