You're going through the motions of what would happen if we left Europe with no agreement.
Just say it happened. Just day. Our EU membership dissolves at the very moment written in law.
You've got two legal obligations that contradict each other. You're obliged to police your own border, and you're obliged to keep the Irish border open
And that's what leaving with "no deal" actually means. It means putting a border in the Irish Sea, and that's why the Tories won't do it.
But leaving with no agreement would split the country apart because of our other obligations.
There's only one choice left. we stay in the European Union.