3. We don’t need a solar technology breakthrough. Today, solar developers just need a grid connection and permission to sell electricity, and then they’ll be off building solar plants whether it’s a good idea or not.
4. Solar will not solve every problem. But the biggest problem is that our civilisation relies on digging up fossil carbon and burning it, which is destabilising the climate, which multiplies a lot of very unpleasant threats. Solar is part of stopping us needing to do that.