While the 0ne second question is interesting,, and probably unprovable.
I am fairly certain my world started the moment I was born.
Quantum theory would suggest that only energy and uncertainty is needed to account for everything. Including
the fundamental forces and fields demonstrated in electromagnetism. And the implicit nature of uncertainty and chance that pervades everything including evolution and life itself.
As has been shown quantum Computing can complete billions of steps at the same time, it has no need to work consecutively.
In the same way quantum biology has shown that evolution is a quantum process. The answer to an evolutionary problem can be completed in a few steps or even a single step, rather than thousands of consecutive ones as might be supposed.
Taken to the extreme, we and all we see , might just be a quirk of chance in the energy flow.
In another second we might be long gone.