If there is one thing on which everybody on this island should agree, it might be this: we don’t want a B order poll that’s like the Brexit vote. We don’t want to vote on something for which no preparation has been done, without knowledge of the constitutional consequences, and on the basis of disputed facts.

As John Doyle, professor of politics at Dublin City University, put it: “As long as memory of Brexit exists, having a vote without clarity on what comes afterwards is not an option.”