He never changes his position.
Twenty-one.
The answer may shock you.
An Animal, a Vegetable, and a Mineral.
tamagotchi
Steven Hawking with a brake failure!
I said to watch him like a hawk! ME: soaring 20m above w/ a beakful of mice I AM
The position of the dirt bag.
When they find the position, they can't find the momentum. When they find the momentum, they can't find the position.