It isn’t going to be governments making pledges in Paris which change the future anyway, is it? It is going to be technological advance and the associated actions of the aggregated 7 billion of us which will. And one lesson to take from that great economic experiment we call the 20th century is that markets and incentives work rather better at determining what does happen than the promises, pledges and predictions of governments when trying to manage an economy. Or even reality.
As Bjorn Lomborg said near two decades ago – and boy doesn’t he still get stick for having been right – in a world where solar power drops in cost by 20% per annum and is still doing so what a politician promises to do to the rest of us is really very small beer indeed.