Thomas Nagel: Bat Experience - Sweatshirt

Nagel asked what it is like to be a bat and showed that no amount of physical description of echolocation gets you to the experience of it. The problem is still open. A brushed-interior crewneck makes this the one you reach for by default.

• Everyday weight: Substantial enough for a cold lecture hall, light enough to keep on indoors.
• The hard problem, illustrated: The single most cited paper in modern philosophy of mind, made visual.

You can know everything about the bat and still not be one. Take your size — the debate can wait until you are warm.