And yet, you did not experience blurry streaks across your visual field. That’s because you don’t see the world in terms of pixels: you see objects, and they changed very little as you moved your eyes. You perceive low-level regularities like lines, contours, streaks, and blurs, as well as higher-level regularities like complex objects and scenes. Your brain learned these regularities as concepts long ago, and it uses those concepts now to categorize your continually changing visual input.4
