Does anyone have even the faintest idea how this problem can possibly be resolved? I mean, setting aside the politics of it, working on the assumption that both sides actually want to solve the issue and are willing to make sensible compromises. Has anyone actually seen any proposals that have even a kernel of something workable at the heart of them? Have any of the more thoughtful Brexiters put forward anything more substantive than "we should use clever technological solutions"? Because I assume someone must have. But I havent seen it if they have. And it seems to me what Barnier says is right, that it might be that the only way of doing it is to have Northern Ireland remain inside the customs union, and have a border between Northern Ireland and Britain. But Im no expert in this area, I just find it really interesting and very worrying. If anyone has any bright ideas on this, or has heard any, I would love to hear them.