What would this be like? First of all, I would not be writing to you at all, let alone sending something snail mail, which is not snail mail at all: it is by truck, plane and petroleum. What would you do? Could you? By the way, what exactly are photovoltaic panels, wind turbines and Pelton wheels made out of? This computer, this desk, this lamp that lights my way? What did they put in the souls of my shoes?