Peak oil and the Olduvai catastrophe: is there a link?

The Olduvai Theory is about the declining total world energy supplies and the catastrophic consequences. Peak Oil is a more confined thesis about oil supply declining due to the looming exhaustion of oil reserves in the ground. So Olduvai addresses all energy sources, but Peak Oil is only about one of the energy sources – oil.

In a recent article (Leigh, 2008), I failed to explain the Olduvai and Peak Oil relationship fully and clearly, and I would like to do so in this brief article. So what is the relationship between Olduvai and Peak Oil? Indeed, is there one at all?