Plenty of disclaimers I agree with, but I still dispute that reducing anything to a single, monetary measure is a sensible thing to do. The pitfalls are as clea

Plenty of disclaimers I agree with, but I still dispute that reducing anything to a single, monetary measure is a sensible thing to do. The pitfalls are as clear as with other overly simplistic measures it leads to gaming that measure at the expense of everything else. Or encourages belief that some of those externalities are unimportant as they are not in that headline £££ figure.