Border infrastructure (what a great way of putting it!) is unavoidable unless Ireland is allowed by the EU to be a special case and to break EU rules. We can make whatever border arrangements we like with other freestanding countries, but Ireland is in the EU and, quite rightly, can't override rules that apply to all the other member states. There's a mountain to climb in order to avoid most of the aspects of what a hard border would entail. I mean, what about the fact that they will be in a customs union that we no longer subscribe to? Leaving the border open for the free passage of goods, as now, would be seen as an outrage by other member states. Some of us worried about this before the referendum. What a pity the leave side swept it under the carpet. Yet another piece of their dishonesty. It was all going to be so easy, wasn't it? Such a simple decision to make!