To your footnote, you're not wrong, but climate change is a better and more encompassing description for what people experience: more extreme weather, be it heat, cold, precipitation or drought. We can't feel an average temperature rise of 1.5 degrees, but I can certainly tell you that we just experienced the hottest summer peak temperatures on record.
Your attitude reminds me of the religious fundamentalists I grew up with, who were still arguing about "evolutionism" and expressing skepticism over the idea of geological time as recently as the '80s and '90s.
That's quite the scale.
> The solar sail model, to its credit, is capable of being dismantled if things go wrong.
I'm sensing a potential issue here...