Multiple dimensions with a common side

Perhaps the big bang did not create matter and energy but instead created a multitude of dimensions, all with a common side. Each quanta of matter/energy would reside in a separate dimension. An increase in the number of dimensions would make the universe appear to expand.

Gravity may be caused by this common side as they pull together. Also trends toward commonality would result. Evolutionary trends may follow similar paths on far flung worlds. However differently timed extinction events may lead to different results. There could be worlds of intelligent dinosaurs because the killer asteroid did not appear on time.