Edwin, M. King Hubbert really did know what he was talking about in 1956:
http://www.hubbertpeak.com/hubbert/1956/1956.pdfNo, he did not predict every nuance of the real ingenuity of mankind when confronted with falling production from conventional wells. He did not predict "tight" oil, oil shales, gas-to-liquids, etc. other than in the most general sense - and we are still in the period he called "the jagged peaks" when alternate hydrocarbon sources are being exploited for energy. But for as little data as he had, and without a computer to aide his calculations, he made remarkably accurate predictions. The source of many of the "inaccuracies" in his published data are the manipulations of OPEC, the unanticipated world population surge, and the rising demand for oil fuels in China and India and the Third World.
Some of the PO.com members have been anticipating the doom that still hasn't quite arrived since 1982 or so - there was an earlier forum called "The Oil Drum" which still can be found in archival form at
http://www.theoildrum.com/node/9085.
It is becoming apparent (to me at least) that the World As We Know It (often referred to around here as BAU which stands for "business as usual") is more complex than Hubbert or anybody else could model in precise detail. The primary wild card in anybody's peak-related calculation is human behavior. But it is also apparent that TEOTWAWKI is upon us, but will take decades to arrive, barring "hot" resource wars.
May I recommend for your reading enjoyment another online work:
https://ecoartscotland.files.wordpress.com/2010/02/kunstler-the_long_emergency1.pdf...which I first read online, and then went back and purchased. I carry both that and "King" Hubbert's seminal writing around with me on my E-reader.
FWIW, I am pretty sure that the Oil Peak (for conventional wells) occurred in the period 2008-2012. But the substitution of alternative hydrocarbons is blurring the impact of this. However, the meaning of "oil peak" is that half the available resource has been consumed. With consumption at such incredibly high levels, and the world economy sliding slowly into the crapper, destroying as it goes the demand for hydrocarbons, the duration of the second half of the hydrocarbon consumption curve is highly debateable.
With the primary factor in duration being human behavior, we simply don't know in any detail when the world as we know it will end. But I for one subscribe to Kunstler's "slow crash" scenario as most likely. That really is both a satisfactory state of things and a way to live your life going forward - because if we did actually possess a calculus of human behavior, we would know IF the world will end, and WHEN. And then I believe we would immediately destroy ourselves in anticipation of the end.