furcifer said:
These are extremely simple concepts. It really takes effort to not understand them and be able to apply them to AGW.
Religions often require deliberate misunderstanding of things like evolution, climate change and plate tectonics. Many here believe in the religion of denial, and mere facts won't sway their deep personal faith, any more than a new hominid fossil will sway a Christian creationist. He HAS to misunderstand.
George Monbiot put it well:
It is hard to convey just how selective you have to be to dismiss the evidence for climate change. You must climb over a mountain of evidence to pick up a crumb: a crumb which then disintegrates in the palm of your hand. You must ignore an entire canon of science, the statements of the world's most eminent scientific institutions, and thousands of papers published in the foremost scientific journals.
It may be hard - but many deniers are up to the challenge. Their religion demands it. So they find that crumb and base their entire worldview on it. And when it disintegrates, why - they just find another.