Dimensions aren’t universes, that’s a trope that was invented by bad sci-fi writers who misunderstood the membrane theory of multiverse. A dimension is just a pair of opposed directions, like left and right, or up and down, or future and past. We interact with four dimensions in our daily lives, and string theory proposes around 10, but the other ones are smaller. Membrane theory proposes that there are multiversal dimensions that lead to parallel universes. The dimensions are not universes, any more than a country is. Yes, you sail West to reach America from Portugal, but that doesn’t make America a direction.
Dimensions aren’t universes, that’s a trope that was invented by bad sci-fi writers who misunderstood the membrane theory of multiverse. A dimension is just a pair of opposed directions, like left and right, or up and down, or future and past. We interact with four dimensions in our daily lives, and string theory proposes around 10, but the other ones are smaller. Membrane theory proposes that there are multiversal dimensions that lead to parallel universes. The dimensions are not universes, any more than a country is. Yes, you sail West to reach America from Portugal, but that doesn’t make America a direction.