Is our world a virtual reality?
All this talk about virtual or simulated worlds in the brain (or in the head) suggests that that we don’t experience a public world, a common framework that human beings share. Virtual world talk implies that I don’t share the simulated world in your head, nor do you share the simulated world in my head. Isn’t it a mystery how these separate worlds seem to intersect? Of course we don’t need to introduce such a mystery. The obvious and reasonable assumption is that we share a common framework, i.e., the real world, a public world as opposed to a private, simulated world constructed by the brain inside the brain.