Let us remember! In 2005, oil prices began to rebound, after fluctuating for twenty years between 15 and 40 dollars per barrel. When it reached 50 dollars, people started to worry and to talk about expensive oil. Theorists of "peak oil" voiced their concerns and announced the imminent exhaustion of resources. Patrick Artus in La Tribune predicted a barrel around $ 300 in 2015! Jean Marie Chevallier replied wisely that it was very difficult to forecast. A few weeks earlier, Alain Terzian, still in La Tribune, came to the obvious conclusion: the world had never had much oil. Ten years have ...