Even assuming people are able to accomplish whatever they want, it would have to be within a certain timeframe. Both of these assumptions are too rosy for me. We play within the boundary conditions of nature, and it seems reasonable to assume some things are impossible or exceedingly improbable.
The purpose of my proposal to drastically increase fossil fuel taxes was only to decrease pollution. It is possible that humans do not discover an alternative fuel source or way to move mass as cheap and conveniently as gas for a long time.
