This is about horses and racing and Christmas, but I want to start with football. I know nothing about football. I do know, however, that it is a thing of profound passion. I sometimes wonder how people can follow their teams, week in, week out, and stand all the heartbreak. (I have a friend who is a Queen's Park Rangers supporter.) However, this week I somehow stumbled upon a truly magnificent documentary called Welcome to Wrexham. It's about a down-on-its-luck football club which was suddenly and apparently randomly bought by...