> But the idea that from the 70s to 2000s you could have systematically used wind and solar to replace fossil fuels is nonsense. I didn't say anything like tha

> But the idea that from the 70s to 2000s you could have systematically used wind and solar to replace fossil fuels is nonsense. I didn't say anything like that! What I meant is that the sustained technology development effort you called for actually happened for other energy-generating technologies, starting on the date you suggested. The result is that costs fell by several orders of magnitude, and also that it makes sense to widely deploy them now.