One would have guessed that if one mixes poll results with the opinion of a pool of experts the end result would be pretty accurate.
Yesterday events proved that is not always true, as Jim Grant on CNBC said:
Markets just got a hard lesson in humility
Below is a screenshot of Betfair giving the odds of staying or leaving the EU on Thursday afternoon:
And this is how they changed when the first results came in on Friday morning:
http://cgmalaysia.blogspot.my/2016/06/brexit-markets-are-humbled.html