If you're like me, you might have spent a moment or two in recent months pondering how billionaire oilman T. Boone Pickens, oil banker Matthew Simmons, and many others are suggesting that the world is reaching Peak Oil now, and at the same time, Cambridge Energy Research Associates (CERA) headed by Pulitzer Prize writer Daniel Yergin, and others such as Exxon Mobil, are not predicting a Peak in global oil production until circa 2040 followed by a slow gradual decline. How can such smart and successful people disagree by decades on a topic so vital?

Is it possible they use different data sources? Do they mean different things when they say "Peak Oil"? Do they get different secret handshakes from Saudi princes? Do they have different agendas? Are they using different boundaries of analysis? Is one of them kidding? This 3 part post will address how people can differ so much on something so important as a peak and subsequent decline in world oil availability, addressing both factual and psychological reasons. Does the world have plenty of oil? Maybe, but as I will discuss below the fold, this is not among the questions we should be asking.