kayak
the beautiful and talented alisa dragged me out onto the lake in a kayak. usually she takes the front and i take the back. we make a good team. but this time i was in the front and she was in the back. and we made beautiful circles and zig zags all over the lake. not entirely voluntarily. kayaks are pretty fun. they spin like tops. very slow tops. the water never slows it down. unlike a boat that has a rudder. so even though the kayak is pointing in the right direction and you're paddling straight the kayak continues to turn. the longer you let it go the bigger the oscillation gets. it really drove home the importance of making small changes early. heh. now suppose you have a planet...