Actually Dyson seems to be hedging his bets on whether it is caused by man. He seems less convinced than the conventional view but accepts it could be the case.

Actually Dyson seems to be hedging his bets on whether it is caused by man. He seems less convinced than the conventional view but accepts it could be the case. His main point is that it won't be so bad or could even be good. The confusing part is why the global warming deniers would so instantly rush to him as verification of their views.