by shortonoil » Fri 23 May 2008, 21:21:59
pup55 said:
$this->bbcode_second_pass_quote('', 'S')o that means that if there was a 4.5% decrease in miles, and a 3.5% decrease in fuel, the fleet became less efficient during that period.
If I’m not mistaken ethanol substitution was still ongoing during most of last year. Ethanol, having only .67 the energy per gallon as gasoline, could have easily resulted in an additional 1% decline in efficacy.
dohboi said:
$this->bbcode_second_pass_quote('', 'M')aybe demand destruction will cut into this some times for short intervals, but not by much and not for long. You're still assuming that the mechanisms that worked fairly well on the up-slope will work post-peak, but they probably won't.
We've gone from $10/bbl to $135 in eight years in a roughly exponential curve. At every turn, every mainstream (that is PO-unaware) analyst insisted that it would not go much higher or would fall back a good bit because of demand destruction. But the price just kept on going up, with only rare and increasingly temporary dips and pauses.
The ERoEI of oil has been declining for the last 100 years. This has been intensively studied by many competent researchers and very well documented in pier reviewed papers. The energy that oil delivers is going down per volume by about 5% per year at the present and will continue to until the end of the oil age.
One does not need to construct economic or political scenarios to understand this phenomena. It is well explained by plain simple physics that is well founded on the most well known and unimpeachable laws of nature.
Why use highly subjective analysis when objective, verifiable and deterministic calculations can give predictions that can be verified from historical results. Most of these analysts are using the equivalent of chicken blood and dried bones to make their determinations.
Of course this is not surprising. The medical field bleed its patients to death for three centuries, asserting vehemently that their procedure was the correct one to use during the entire period.