so i'm in "what if we are robots and don't know it??" section and here's my theory: a person in the future is like "what if i go back in time to just about when humanity started and put a robot there to take over before people can" and so they do, and then they come back to curent time and NOTHING HAS CHANGED. and it turns out that the robot was able to learn and evolve so much it BECAME HUMAN. it was able to reproduce and create a whole new species that eventually destroys the world AKA humans. fine i don't actually think we are robots or even that it's possible for robots to reproduce but it was fun coming up with the story beep boop