Thanks for the comment. Actually I fully agree with what you've said. I'm questioning the raw material and energy availability of all these panels and turbines (thanks for the info on transmission lines) based on the IEA report and on the work of geologist Simon Michaux. Your last statement on people not willing to go back into caves is spot on. (Seriusly: can I use that quote? I liked it so much!) Anyway this is going to be a very interesting decade (or couple of decades) to see whether we can do this transition or not.