How dumb is your right foot?
Sit in a chair. Pick up your right foot. Now start rotating your foot at the ankle, in a clockwise direction.
Ok, while doing that, draw a number 6 in the air with your right hand.
Your foot involuntarily changed direction, didn't it?
Weird. Happens every time.
Maybe we shouldn't rely on that appendage to control a ton or two of metal hurtling down the road, eh?