"...Then, 10,000 years ago, the wild fluctuations stopped, and the climate settled down to the balmy, stable state that the world has enjoyed since then. At about that time, perhaps coincidentally, perhaps not, mankind started to progress."
How does the author, who purports to understand the science and mathematics behind the global warming argument, justify his claim that a 10,000 year plateau constitutes a "lull" when the climactic temperature fluctuation periods he cites are millions of years long?
In other words, the Jurassic Period was millions of years long, and the Earth was hot the whole time through. If, during the Jurassic Period, a couple thousand years occurred here and there that were cooler than Jurassic average (i.e. equivalent to a modern-day climate), it would not move the Jurassic thermal average even slightly, nor would there be much paleontological evidence of such a comparatively brief cold spell.
So, he has no basis by which to assert that the 10,000 years we've been enjoying in this "midway" state are the result of some kind of delicate balance that's being shattered by human activity. Quite the contrary, it appears that he's stating that this temperate spell is more or less unnatural, or at the very least highly unusual, and we would be fools to assume that the Earth will remain in this state regardless of human activity. Rather, according to his argument, the natural state of Earth is to be either "very hot" or "very cold", and sooner or later it's going to revert to one of those two extremes. So we'd better be ready for it, because it's going to happen regardless of how many SUVs you take off the streets or how many cows you put diapers on.
That is the point I take issue with as well.
In fact, the real point is the speed with which the current climate change is taking place, not that it is, in fact, taking place. If we were experiencing a very, very slow change than there would be no reason to suspect human interference. The fact that it is happening about 100 times faster than naturally and coincides with an exponential increase in CO2 in the atmosphere which just so happened to coincide with an exponential increase in human burning of fossil fuels is what leads me to believe that humans are affecting the change to some degree.