And random responses. 1. I don't know if the coal used to make steal can be replaced with synthetic sources but petrol (and diesel and oil) can absolutely be r

And random responses. 1. I don't know if the coal used to make steal can be replaced with synthetic sources but petrol (and diesel and oil) can absolutely be replaced with synthetic fuel powered by renewable energy and carbon capture. The tech is old and boring. What's needed are cheaper renewable sources and more expensive oil, both of which are happening right now. 2. You're absolutely right and there is some debate that battery production can ever scale to level needed. Fortunately some combination of batteries and synthetic fuel almost certainly can get us to 100%. 3. Spot on and highly concerning, particularly as demand for these things at low cost has driven mining operations to places with poor environmental protections. 4. Great point. Demand side management and spot pricing are already things and more wide spread implementations will definitely make renewables more economical. I personally will be super excited to see one of the companies pursuing synthetic fuels figure out how to take advantage of surplus generation to capture carbon and turn it into essentially high energy density storage.