> There is a finite amount of the stuff that is economically recoverable. We don't know exactly where the limit is, but when we hit it -- assuming we have no al

> There is a finite amount of the stuff that is economically recoverable. We don't know exactly where the limit is, but when we hit it -- assuming we have no alternatives -- we will begin a downward spiral toward the collapse of modern civilization. Whoah, that seems a little overly pessimistic. We _do_ have alternatives, they just aren't economically competitive with fossil fuels. So I say bring on supply constraints... anything that raises the price of fossil fuels helps to make alternatives more attractive and increase investment into their research and refinement. So I'd still be way more concerned with the CO2 problem, overfishing, pollution, mass-extinction... all that stuff.