Why can't we analytically continue our model of the Universe past the Big Bang in a way analogous to how the Euler sum is analytically continued into the zeta function? If this were possible, this extension would encompass a larger phenomenon but would reduce down to our Universe when certain parameters are reached just like the larger phenomenon which is the zeta function reduces down to the Euler sum when Re(s)>1. In this analogy, the reason GR fails at the Big Bang singularity is in some as yet unknown way, similar to why the Euler sum fails when we attempt to use it past it's region of convergence. This just seems to make sense to me. Any chance they're trying to do something like this with Quantum Cosmology or Loop Quantum Gravity and I just do not understand it?