Thanks, I was a Freeman Dyson fan also, I didn’t know he’d passed. I also disagree his opinion if he was a denier. It could be that he didn’t always feel that way. The concept of the Dyson sphere is intrinsically solar energy centric, it seems crazy knowing that, that he would then not also deduce that Earth itself is solar powered but humanity is not, hence it was only a matter of time until we ran into problems. Climate change is a simple result of our exhausting resources on Earth, in our quest to draw energy from all stores of it on Earth.
He was a great mind in any case, and a human, not perfect, just like all of us.