We've never had a crisis like AGW, and we're in a world where "My opinions are worth as much as your facts." And very large numbers of people want criminals in power. There's a phrase -- enlightened despots -- to talk about people like Frederick the Great who were (supposedly) wise enough to chart a wiser course than the people would. When was the last time you heard of an "enlightened criminal"?
When James Hansen retired he did a fantastic geological study about Antarctica. He and his team discovered something alarming. Every time the atmosphere warmed 2C above 19th century levels, Antarctica has melted out. Not sometimes or often or usually. Every time. The paper agreed with the consensus, knowing beforehand that the consensus would say the same thing: What's the mechanism for that? Hansen didn't know. But asked, wouldn't that be a useful thing to know? So people have looked at Antarctic ice and how it melts. It turns out the warming ocean penetrates from underneath. So, for awhile in winter ice actually expanded around Antarctica. Well, why is that? Fresh water freezes faster than salt water. So much fresh water was entering the oceans around Antarctica that in (our) winter the bounding ice expanded.
Then, it didn't.
Ice is frozen water. So, when the expansion ended something else was happening than the influx of more fresh water. The water wasn't getting cold enough anymore.
So, when do you imagine people are going to give up their entrenched intellectual positions? Tomorrow? 10 years from now? 50 years? That's another thing scientists have discovered recently. People cling to their entrenched positions like grim death. That discovery was behind Trump's boast that he could shoot someone and not lose support. People's vanity is stronger than self-preservation. Ain't that a kick in the head?