
You’re cooking dinner, distracted, and your hand brushes a hot pan. Nerve signals race to your spinal cord and back to yank your arm away in a fraction of a second, with no thought required.
Then comes the pain. A sharp, spreading sting gives way to a pulsing ache, and you cradle your hand and run it under cold water until it subsides. That felt experience is distinct from the reflex that preceded it. While the reflex moved your body out of danger, pain drives you to protect the wound, recover, and learn to avoid similar mistakes in the future.