“You’ve heard of animals chewing off a leg to escape a trap? There’s an animal kind of trick. A human would remain in the trap, endure the pain, feigning death that he might kill the trapper and remove a threat to his kind.” – Dune, Frank Herbert
A young boy is led into a room, where a powerful old crone awaits. She commands him to put his hand inside a box, saying that if he removes it she’ll inject him with a lethal poison. He complies. The boy’s hand burns inside, but he keeps the hand inside, because the pinprick at his throat would kill him if he removes it. Finally, the agony stops. He pulls out his hand. . .
And it’s perfectly fine.