It is impossible to have missed the news on cheap oil and gas, and what it is doing to our economies. A Google search for ‘oil price drop’ shows you what Reuters, BBC, Bloomberg, Forbes, etc – the big boys – have to say on the subject. And shale plays a key role in both. And indeed, oil costs less than it did in 2008 and 2012. And indeed, this is having a big economic impact. It means that Europe in 2014 saved around 1% of GDP, more than €100 billion, in import bills. A free and welcome boost. But this column is not seeking to add to what Reuters has to say. It wants to offer two other perspectives.