This is a very significant moment. Even if the UK Supreme Court finally rules in favour of the government, it will be on a point of law rather than the issue which offends the majority of MPs and a large slice of the voting public, especially among the young. Boris has not told the truth about why he needs such a long prorogation, when three days would do. In other words everyone accepts he is a liar. That may prove a problem. Which does not go away.