What you see is what you get, right? Nope. In his mind-bending new book, "The Case Against Reality: Why Evolution Hid the Truth from Our Eyes," Don Hoffman argues that what we see, smell, touch, and taste are illusions. Reality, he says, is just an interface, like a computer desktop, built by our brains to conceal complexity. Hoffman offers us the red pill and invites us into "The Matrix" — the surreal, flickering, unreliable "real" world.