By Cassandra Legacy – Jul 14, 2016, 3:27 PM CDT
Since at least the end of 2014 there has been increasing uncertainty over oil prices, from whether so-called “Peak Oil” has already happened, to matters of EROI (or EROEI) values for current energy sources and for alternatives, to climate change and the phantasmatic 2oC warming limit, and the feasibility of shifting rapidly to renewables or sustainable sources of energy supply. Overall, it matters a great deal whether a reasonable time horizon to act is say 50 years, i.e. in the main the troubles that we are contemplating are taking place way past 2050, or if we are already in deep trouble and the timeframe to try and extricate ourselves is some 10 years. Answering this kind of question requires close attention to system boundary definitions and scrutinizing carefully any assumptions.