After he taught his lessons of prediction to random members of the population, he pitted them against analysts from the NSA, CIA and military in "The Good Judgement Project". His "superforecasters" - random members of the population taught a few lessons - out performed the trained analysts with access to classified information by 30%.
Here is the source on Gove's comments on experts. It isn't stupid at all, but backed up by a 20+ year study by a famous Ivy League professor
http://www.newyorker.com/magazine/2005/12/05/everybodys-an-expert
The book is called
https://www.amazon.co.uk/Superforecasting-Science-Prediction-Philip-Tetlock/dp/1511358491
https://en.wikipedia.org/wiki/Philip_E._Tetlock
After he taught his lessons of prediction to random members of the population, he pitted them against analysts from the NSA, CIA and military in "The Good Judgement Project". His "superforecasters" - random members of the population taught a few lessons - out performed the trained analysts with access to classified information by 30%.
https://en.wikipedia.org/wiki/The_Good_Judgment_Project
The guy who ran Vote Leave, Dominic Cummings, also a former SPAD for Gove, is a big fan of Tetlock and his forecasting methods.