This may or may not be relocated to Trash, I'm just flexing my imagination muscles here.
From what I understand, M-theory proposes that spacetime has 11 dimensions, of which only 4 constitute our Universe (3 space and 1 time).
I was thinking about how earthquakes happen, two tectonic plates rub against each other, building up pressure until that built-up pressure is released as a (potentially quite violent) tremor.
Could something similar have happened within spacetime where "friction" (for lack of a better word) between a few of the 11 dimensions built up pressure that was eventually released in a tremor that we refer to as the Big Bang, a sort of "versequake"? Three of these 11 dimensions became distended into what became "our" Universe where the remaining dimensions in our region of spacetime retained their contracted state?
If this idea (not even a hypothesis at this stage) has any merit, could it then be plausible that other spacial Universes could arise from other areas of friction-tremor-distension regions of spacetime, albeit not necessarily with 3 spacial dimensions?