The Simulation Hypothesis and the Big Bang.

If you read any modern account of the Big Bang (origin of our Universe) event - and I've read dozens - you'll note, or should note, one very obvious oops that you'll NEVER read about or see discussed / addressed. And that is, if the entire or total mass / energy contents of our Universe started out being crammed back into a space the size of a tennis ball (or usually even less), what are you going to actually have, especially when terms like "singularity" are tossed around with reckless abandon? I'll tell you. You're going to start the origin of our Universe out from the initial condition of there being, of necessity, the Mother of all Black Holes from which nothing in turn can Bang! A Black Hole will of course leak radiation very, very, very slowly (Hawking radiation) but no one Big coherent Bang! So how do cosmologists arrive at having the entire matter / energy contents crammed in the beginning back into the size of a tennis ball (or less)?

Starting with observations made today that the Universe is expanding, cosmologists wind the clock back (using their mathematical / physical equations) to a nanosecond after Time = Zero which translates into that tennis ball (or less) size. Now IMHO this is totally unjustified especially given that those same equations suggest that the Universe was opaque until some roughly 400,000 years or thereabouts after the Big Bang event. Thus, cosmologists have no way of actually knowing via direct astronomical observations if their equations are telling them a reality story prior to 400,000 years after the Big Bang event. In that 400,000 year interval, it's 100% theory as to the state of play rather than discovering the state of play via actual observation. This is just about as unjustified an approach as if they filmed the inflation of a hot air balloon and then taking that expansion rate over time and then running the equation clock backwards until such time as they conclude that the hot air balloon was the size of a tennis ball, or pea, or even less. That approach would be nonsense. So why is it allowed in cosmology?

So either the Big Bang event happened in a geographical region large enough to prevent the formation of the Mother of all Black Holes, or else - software / special effects rule the origin of our Universe. The Big Bang event (let there be light) and a software program kicking in are quite compatible.