That’s pretty stupid Grant. You want to go back to the freaking Cretaceous?? And then seriously say it “wasn’t that bad”? Climate models predict what will happen at various temperature points, and they’ve been pretty good at that so far. 5 degrees is utterly catastrophic for human life, which, after all, is what we’re concerned about, not a few million years hence when maybe life on earth has adapted to a totally different climate. Look at the trend line on average global temperature. It’s terrifying. If you’re a human being rather than a fucking dinosaur from the Cretaceous period of course!