10/03/16
Sight takes up about one-third of your brain by volume and uses nearly two-thirds of its processing power. No wonder it feels so real. But the truth is, sight is not objective—it’s an illusion.
What you see isn’t just what’s in front of you. Your brain constructs the experience of sight by referencing your concepts, memories, beliefs, emotions, and attention. These mental links run both ways. What you see can shape how you feel—and how you feel can literally change what you see.