One of the key points in Robert Fisher and William Ury’s insightful book about ‘Getting to Yes’ was that you should make every effort to focus on the issues and not the individuals in a debate. What are the assumptions, facts, unknowns, major decisions? Once you begin focusing on the positions of individuals, those individuals are more likely to be less amendable to compromise. It makes great sense. Fisher and Ury refer to this principle as one of separating the people from the issues.*
One of the most decisive aspects of the Brexit debate is the degree that it has devolved into a politics of blame and of calling out the positions of individual parliamentarians, former politicians, and public figures. It is all about naming and blaming, rather than focusing on the issues at stake.
It is never too late to begin moving the discussion away from the personalities and egos involved to focus on the issues. But all of their seven principles might be worth revisiting as soon as possible in the Brexit debate.
*See: https://www.beyondintractability.org/bksum/fisher-getting