On Looking

Horowitz's argument is that human attention is radically selective and shaped by expertise: two people can walk the identical sidewalk and register almost nothing in common, because what we 'see' is filtered through whatever categories our training, profession, or species has taught us to notice. To demonstrate this, she takes the same walk around her New York City block repeatedly, each time accompanied by a different specialist — a geologist, a typographer, an entomologist, a blind woman, even her own dog — and records how dramatically the street changes depending on whose eyes, or nose, are doing the noticing.

The book matters because it dismantles the comfortable assumption that we already see our surroundings accurately; instead it shows perception as a skill that can be deliberately expanded, and treats ordinary urban walking as a kind of undertrained sense that most adults have let atrophy since childhood.

Who should read it

This suits curious generalists, urban dwellers, and anyone interested in attention, expertise, or how specialized knowledge reshapes ordinary experience. It rewards readers willing to slow down and notice mundane details rather than those seeking a plot-driven narrative.

About the author

Alexandra Horowitz is a cognitive scientist and dog-cognition researcher who has taught at Barnard College and written extensively about animal perception and human attention.