Thomas Nagel: Bat Experience - Mug

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.

• Dishwasher and microwave safe: Glossy ceramic that survives real kitchens, not just photo shoots.
• Works at the desk: Wide handle, stable base — no wobble across a cluttered reading table.
• 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. Pour something in and start over.