The statistics of mainstream economists

Simon Wren claims something: In the case of the 20 economists who signed that letter, nearly half did revise their views just two years later. 

The statistics of mainstrream economists are irrelevant.  What is relevant is your job, economist.  And, Simon, I can count the number of nations the size of Britain which are reasonably developed, six,.  And at most 3 of them make  a good control  group.  This has been true for fifty years.

So, if some statistically significant mainstream economist thinks he/she knows something about Brexit, I can assure you, with mathematical fact, they will have a 30% error.  That makes them a worthless read.