https://surplusenergyeconomics.wordpress.com/2019/12/07/159-the-perils-of-equilibria/ https://surplusenergyeconomics.wordpress.com/2019/12/20/160-new-years-revolutions/ rogerglewison December 25, 2019 at 8:11 am said:Your comment is awaiting moderation.Hi David,Its an excellent question and also one which Tim has addressed