… as said by the wise CIP in the comments. Although I wasn’t quite sure how to interpret it. BTW, this is yet more Stern stuff – sorry.
So the first thing to say is… I’m not really happy expressing all this in terms of GDP. We could all be a lot happier on lower incomes if… well, if I was dictator of the world. If we hadn’t wasted billions invading Iraq and on the Child Support Agency and… I hope you get the point. Money isn’t everything.
But if we *are* discussing it all in terms of money, then we ought to notice the point that Tim Worstall has made – that the differences between A2 and A1B (SRES scenarios) are far bigger than 5%. So if we really want to maximise consumption (which is how Stern frames it) then we ought to push towards the A1 family… which is globalisation :-)