You've Entered Many Worlds, Many Problems

Welcome to the Quantum Superposition Support Group, where the laws of physics don't apply, and your sanity is always at risk.

It's a reality check, folks. We've got a lot of worlds to navigate, and not all of them make sense.

Subproblems:

Subproblem 1: Time Traveler's Dilemma Subproblem 2: Infinite Regret Subproblem 3: The Multiverse Management Society Help Me, I Think I've Forgotten Which World I'm In