The most grounded index to evaluate the #energy we are currently using : EROEI = Energy Returned On Energy Invested.
Early, in ast century, it was 100 barrels of oil for every barrel spent. Today, we get mere 3 ! Imagine… getting 1 out of 1 we invest. We are getting close to that.
Read the rest of this very important story @ http://moneymorning.com/ob/the-biggest-energy-crisis-nobody-is-talking-about/
There are differences but it seems uncannily like the Law Of Marginal Return !