The way we explain conflict, when we have two different worlds and views of what's true, how does the simulation let us explain it away without having to program to be compatible? It makes you believe the other people are wrong. As long as you think the people who disagree with you have bad information or bad thinking, you can just keep your own view of reality. Once you see that the world is designed to make us think it makes sense when, in fact, it never can, then you realize you're in a simulation. What is a simulation simulating? Probably the creator's world.