Book excerpt: A look at the human sense of time, a biological rhythm that may follow a different beat from that dictated by external, "official," "objective" timepieces. Time and Place—Timeplace—is a continuum of the mind, as fundamental as the spacetime that may be the ultimate reality of the material world.Kevin Lynch's book deals with this human sense of time, a biological rhythm that may follow a different beat from that dictated by external, "official," "objective" timepieces. The center of his interest is on how this innate sense affects the ways we view and change—or conserve, or destroy—our physical environment, especially in the cities.