Like I said, I'm being creative here. There are a few obvious questions left unanswered by modern physics. Without conjuring up the supernatural, and assuming that most theories are somewhat equivalent, I've tried to come up with plausible ways of making them all jive.

Nested event horizons explains the state of the universe today, and why there is no such thing as a singularity. A particle shower explains how all the matter in the universe appeared to be compressed into a smaller volume in the past, without invoking a singularity. And the absence of a singularity explains why all the matter in the universe appears to be expanding rather than collapsing into infinity.

Extremely high energy photons colliding inelastically, or interfering, seems to explain how a particle shower would have come about using the known wave nature of matter, and seemingly provides an access point for 10-dimensional superstring theory to come into play in the deep past. Higher energy photons have much shorter wavelengths, and might have access to additional dimensions, and the mathematical relationships they impose. It would also seem reasonable, if unimaginably complex, to think of the universe today as nothing more than the interaction of electromagnetic waves, whose behaviour varies with relativistic wavelength, or equivalently varies with energy. The energy of those waves is far less today than prior to the Big Bang, but still applies.

Punctuated equilibrium seems to be a recurring theme. There would be no matter prior to the big bang. In the future, black holes grow and flash over, in an instant triggering a regional reduction in entropy that restores that region of the universe to a primordial state. There is no telling how much time there is between these events, or between the much larger events such as the Big Bang.