Energy descent is the hypothetical post-
peak oiltransitional phase, when humankind goes from the ascending use of energy that has occurred since the industrial revolutionto a descending use of energy.
The term was coined by ecologist
Howard T. Odumin "The Prosperous Way Down" (2001), and was then adopted by David Holmgrenin "Permaculture: Principles and Pathways beyond Sustainability" (2002). [David Room, [http://energypreparedness.net/resources/whitepaper/1 "Energy Preparedness: A Municipal Perspective", 2006] ]
Some techno-optimists, such as Julian Simon, have disputed energy projections such as this, arguing that as oil becomes more expensive, humanity will tend to diversify its energy sources away from a reliance on oil, thus avoiding undesired global reductions in energy usage.
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