"Perception is not something that happens to us, or in us," writes Alva No . "It is something we do." In Action in Perception, No argues that perception and perceptual consciousness depend on capacities for action and thought--that perception is a kind of thoughtful activity. Touch, not vision, should be our model for perception. Perception is not a process in the brain, but a kind of skillful activity of the body as a whole. We enact our...