 The actor George Clooney knows all about ageing and appearance. He once complained that he was only two years older than Brad Pitt, but that he looked a lot older. Mr Clooney presumably had ageing in mind when he wrote a New York Times article calling for Joe Biden to stand down from his candidacy. I love Joe Biden, he said. I believe in his morals. But, he said, this was not the man to stand against Donald Trump.