When I was a kid I was led to the Ultimate Ensemble hypothesis from thinking about time travel. I imagined a scenario where I had just witnessed a time traveler disappearing into the past to go kill my parents before I was born. I concluded that nothing would 'happen' to me. After all, my future was determined by the current state of the universe, and that state certainly existed at that moment, since I had just observed it.

From there I hit on the Everything-Is-Math theory, which I lovingly called the Eris-Polygenesis Effect.