This will hopefully be the last post on this, although it has certainly been fun.
Take a second to read this to kottke's , which is where i received the initial inspiration to pose the question here. He cites from a guy with a Ph.d in Physics from MIT.
The guy takes the time to reply to all of the comments that were left, and on one of his , he says:
As an exercise, take a billiards ball and roll it very slowly across a piece of paper. Then try to get the billiards ball to stay in place by pulling the paper out from under it in the opposite direction. The friction is insufficient to overcome the inertia of the heavy ball.
Go, plane, go.
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At least you had time to solve this. :)