Paint the fence. Sand the floor. Wax on, wax off. If you've seen The Karate Kid, you remember Daniel's frustration. He shows up wanting to learn karate, and instead Mr. Miyagi has him doing chores for days. Daniel thinks he's being used for cheap labor. Then Mr. Miyagi throws a punch at him, and Daniel blocks it perfectly with the motion he learned by sanding the floor. That scene works because it's not just a movie trick. It's a correct description of how the brain actually