Assuming it works the way you are describing, that rapid change is what we need right now. People are claiming this year isn't much hotter than last year and drag their feet. But it is much hotter than a decade ago for sure. If we go from 80F summers to 100F then people can't deny the problem. But if we go from 95F to 100F, some guys will say just crank up that AC and don't be a wuss or something.