I don’t really think we can conceive of just how poorly history will treat the deniers. A hundred years from now, people will have witnessed the wanton destruction caused by warming, seen entire species and ecosystems annihilated. They will view the deniers with more contempt that we can imagine, probably with similar contempt that we feel for the Nazis. The deniers are going to succeed at slowing down or stopping the global efforts we would need to avert the disaster that will happen. And it will be well known that the deniers knew or should have known the accepted science of the time, but they were just too assholish to care about the genocide they caused. I’m serious, I don’t think they will be viewed fondly.