Why hasn't anyone ever come back from the future and stopped us all from suffering, making it so we never horrible things? Does that mean we ever never learn time travel, or at least time travel+a way to make the original tough experiences be un-experienced?
Whenever they invent time travel, they discover that the ability to change the past becomes the biggest cause of suffering, so in the end they always un-invent it.
Haven't had one of these for awhile. This thread is for questions or comments that you've felt silly about not knowing/understanding. Let's try to exchange info that seems obvious, knowing that due to the illusion of transparency it really isn't so obvious!