The Prime Minister is right to seek further assurances on the backstop, which, after all, is what many right hon. and hon. Members on both sides of the House asked her to do. Is it not the case that most hon. Members who now support a second referendum, most of whom voted to trigger article 50, are doing so working on the heroic assumption that remain is likely to win? Have they stopped for one second to consider the possibility that leave might win or, worst of all, that we would have another very narrow result that would cause uncertainty in this country in the months and years ahead?