| http://www.w3.org/ns/prov#value | - Speculators did not have any leverage as long as countries such as Saudi Arabia acted as ???swing producers???, so that oil kept being 1/ produced at low cost, 2/ sold at low price and 3/ nevertheless able to satisfy a growing demand (The three features that generally characterized the exceptional period our world lived from 1945 to about 2005).1. cost of production is not just absolute but relati
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