OK got it - misunderstood you. I'm not entirely sure I agree in the sense that if people really feel an imminent danger they can pull together and make sacrific

OK got it - misunderstood you. I'm not entirely sure I agree in the sense that if people really feel an imminent danger they can pull together and make sacrifices. But even when phrased as a 'tipping point', climate collapse is just not visceral enough to produce that kind of reaction. Personally I think we're toast (though I'd forgo the 'pessimist' label).