On Hands (Art by Spritedude)

That's a stupid question anyway.

I can't fly a plane. I can still tell when a plane has crashed. I can't play a sousaphone. I can still tell when someone's played an incorrect note with one. I can't cook Beijing roast duck. I can tell when one has been burned nonetheless, somehow.

It's almost as if the question isn't being asked in good faith.

Almost.