I also liked this sentence:
If oil runs out next year, or in the next decade, that will matter less than the rise of competitive sources of energy in the marketplace. Petroleum will go the way of whale oil, which in 1850 was the world’s fifth largest industry, Lovins said. That powerful industry lasted precisely until coal-based oils provided a cheaper alternative to the common lighting fuel. You don’t hear much about whale oil anymore.
“Whalers were astounded,” Lovins said, “when they ran out of customers before they ran out of whales.”
Here’s the trick of radical efficiency: Math.