"I can't feel my feet any more."
"That's okay, we can replace feet. Just make sure your fingers and ears don't go numb on you. Those are much harder to replace."
"Why is that?"
So he explained to his daughter the simple history of nerve reintegration, and how balance was a mechanical issue, but touch and hearing were a spiritual issue, and harder to recreate.
He said, "Some people get lucky, and have their replacement fingers or ears work just fine, but it isn't a risk I want you to take."
"Can you rub my ears, please, then?" She asked.
And he smiled, and he did; secretly hoping he wasn't pressing too hard with his unfeeling hands.