Results/Conclusions
Historical research suggests that these beliefs are deeply flawed. Humans develop complex behaviors and institutions to solve problems, often urgent problems that must be addressed without delay. Complexity and problem solving always have costs and require resources. Rather than emerging from surplus energy, cultural complexity (denoted “progress” in popular thought) often precedes the availability of energy and subsequently compels increases in its production. This suggests that, with major societal and environmental problems converging in coming decades, voluntary reductions in resource use may not be feasible. It is likely that future sustainability will require even greater energy production than is now the case.