That's the whole point. They're surprised that it's happening so fast. The acceleration at which things are happening has gone far beyond anything they predicted. My local area hit 40°C a couple of days ago, the highest recorded temperature on record since we started taking temperatures. We've had constant temperatures in the high 30s for the past 2 weeks. I can't remember temperatures this high and I'm almost in my fifth decade on our little blue dot. The icebergs that we see every year failed to show up this year because of the large amount of melt happening in the Arctic, something I can't remember seeing in my lifetime. I know what I'm saying is all anecdotal but there's also plenty of evidence supporting global atmospheric warming that's backed up by scientific data.