One argument I hadn't heard yet about this battery thing: If you think about it, everything is done in one place or another because it's advantageous to do it

One argument I hadn't heard yet about this battery thing: If you think about it, everything is done in one place or another because it's advantageous to do it there. We grow food out in the countryside because we don't find it economically sensible to grow potatoes in Mayfair, where we'd rather have hedge funds. Are potatoes then a solar panel, used to capture and transport energy to fund managers? I mean sure, but in a trivial way that doesn't really illuminate any economic issue. Specialization has been known for some time.