And then US tight oil is also suspect of being basically a scam : AFAIK this industry has had maybe a couple of quarters in the green, so, like with corn biofue

And then US tight oil is also suspect of being basically a scam : AFAIK this industry has had maybe a couple of quarters in the green, so, like with corn biofuel, the resulting energy is likely to end up negative (not even counting the pollution!) - basically Wall Street using cheap Quantitative Easing money, while leaving someone else will the bill once the music stops pumping ?