Read it. It addresses quite logically why oil will never run out, but doesn't go to the next logical step and address what might replace it, or the next logical step after that and address what the world would be like if nothing can replace it.

It's as useful as pointing out to a parachuter in free fall that, if his main chute doesn't open, he's got some time to think of an alternative, so therefore there's nothing to worry about.

Typical economist answer. Technically correct, but worthless.