Here’s how it works.
You can go to any point in history and change one thing. Maybe you erase someone. Alter the course of a battle. Delay or speed up the introduction of an innovation. Etc.
Of course, this changes everything that comes later. The goal is to do something that results in the world being a better place in some significant way. And since there’s a comment button sitting down below the post, you’re free to challenge, offer your own ideas, counter-move, whatever.
This is a brain-torturer, because you really have to think through the implications.
I’ll go first. The Apostle Paul is never conceived, depriving the emerging Christian orthodoxy of its first and most influential politician. I think this reduces the chances of the Church establishing itself as such an institution of abuse through the ages and allows the safer development of other strains, such as the various gnostic sects.
I may be wrong, but that’s my first move.