Predicting Climate Change is Hard

A reader wrote into Information Week in response to an article about Global Warming Skeptics with this interesting observation:

"The best supercomputers in the world, knowing initial conditions with maximum accuracy, still can't determine how the smoke of a cigarette in a car will dissipate. Now imagine a planet the size of the Earth where we don't know all initial conditions."

Reason enough to deny human-causes global warming? Probably not, but it does raise an interesting point of view.