You don't need to simulate the entire universe in order to accurately simulate a causal chain - just the visible universe. Which is a lot smaller. Hell, you co

You don't need to simulate the entire universe in order to accurately simulate a causal chain - just the visible universe. Which is a lot smaller. Hell, you could just simulate an individual and what they observe. For all I know, I'm talking to the AI in which I, and solely I, reside right now. Woo, simulation-solipsism.