What you see, looking around, it’s not really the light coming into your eyes. Your eyes are shit. Little camera-obscura pinholes. But your brain’s evolved tricks to build a useful hallucination based on the trickle of data it gets. Because your environment’s mostly consistent, it’s easy to fill in what’s missing from a few stable assumptions. Much of what you’re seeing right now”—she licks Anna’s eyeball, which is really gross—“is neural postprocessing. Your sight itself is an optical illusion. Don’t you know this? Don’t they teach it in school?”

