Figures out the "AGW gon kill us" crowd are idiots, and hurting real science. And their motivations are less than pure. Figuring out that the lysenkoism that dominates is just another facet of the crony scam that is our protectionist economy is a bitter pill for many.
Losing the whig view of history (always progress) is also a hard feat for many to pull off, being so heavily indoctrinated into believing it by public schools. Bad ideas do take root, and sometimes they can bring society into dark ages.
Nova points out that the entire trillion-dollar industry of climate change policy rests on a single hypothetical assumption, first advanced in 1896, for which to this day there is no evidence.
The assumption is that modest warming from carbon dioxide must be trebly amplified by extra water vapourβthat as the air warms there will be an increase in absolute humidity providing βa positive feedbackβ. That assumption led to specific predictions that could be tested. And the tests come back negative again and again. The large positive feedback that can turn a mild warming into a dangerous one just is not there.
I remember saying to friends years ago that "radiative forcing" was impossible. Water vapor concentrations due to evaporation go up roughly linearly with temprature until you get to boiling. That's a far cry from "triple".