Its obverse can be proven by positing the overdetermination of cause and effect. In this scenario every act is substantially overdetermined by every prior overdetermined act. Sadly, on this continuum there is no free will. Ah well, give a little take a little.
So there are infinite universes like the one in which I burped twice today instead of once, on and on for every tedious “decision” down to the molecular level. Unlikely that infinite us exist.