During the showdown with Lou, why does Joe turn on the carousel? He does it quite deftly, barely looking at the power switch, as if he'd been planning it all along, and knows exactly where the switch is located. Is it really that simple and easy to turn a carousel on and off? And if he had wanted to shoot Lou, it would have been much easier when he was standing still, right in front of him, not on a turning carousel surrounded by moving horses.