Yes, yes, we know about Sir Keir Starmer’s policy flip-flops, backtracks, all-things-to-all-persons exterior and his enormously inspiring and memorable programme. Yes, Labour’s front bench could be its weakest ever; it contains no heavyweight thinkers, and nobody knows what shadow chancellor Rachel Reeves believes in. But there are other, deeper reasons why there is as little basis to trust Labour to run Britain as there is to give the Conservatives another chance. The point about Labour is not just its vacuousness at the level of policy. The more fundamental problem is that the party lacks an…