Or just take the limit as time->infinity and simplify it to price=pollution. If you want this taken to the logical extreme, see http://www.tinaja.com/glib/ener

Or just take the limit as time->infinity and simplify it to price=pollution. If you want this taken to the logical extreme, see http://www.tinaja.com/glib/energfun.pdf http://www.tinaja.com/glib/energfun.pdf where it is argued that "using dollars = spending gasoline". As oil is the cheapest available energy source, everything eventually becomes oil burnt.