system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why when I pinch the skin on my elbow as hard as I can it doesn't hurt, but when I graze it or cut it, it does?
gpt
The nerves which respond to a cut are below the surface of the skin. The elbow is designed to be leant on etc. so has a different distribution of nerves than a more sensitive part of the body than say the fingers.