'Because the costliest stuff is left in the ground, there will always be petroleum to mine later. “When will the world’s supply of oil be exhausted?” asked the

'Because the costliest stuff is left in the ground, there will always be petroleum to mine later. “When will the world’s supply of oil be exhausted?” asked the MIT economist Morris Adelman, perhaps the most important exponent of this view. “The best one-word answer: never.”' Yes, but it does not follow: "Effectively, energy supplies are infinite." This is such a massive failure of basic logic that I really do not think anything more needs to be said. Yet I will say it. The fact that a given energy source requires more energy to produce than it can yield does not make it an infinite source! Nor does a source which can yield a positive flow but does not present a better return on capital than other existing sources off an infinite supply. Just because it will never be used does not mean it is infinite!