This is something you won’t hear from either Brexit or Remain camps:
Statistical theory even allows us to quantify how expectations about the US presidential election should shift if Brexit wins in Britain. Suppose, for the sake of simplicity, that we start by giving equal credibility to opinion polls showing Brexit and Trump with almost 50% support and expert opinions, which gave them only a 25% chance. Now suppose that Brexit wins. A statistical formula called Bayes’ theorem then shows that belief in opinion polls would increase from 50% to 67%, while the credibility of expert opinion would fall from 50% to 33%.
Since bond markets hate uncertainty, you can imagine what happens next.