Nice to see that the people who count--the ones who actually spend the dough, that is, as opposed to impudent bystanders who tell them how much better we could do it--don't have time for that glib prejudice against older producers, whether mares or stallions. In making the daughter of a 23-year-old mare the most expensive yearling filly in Keeneland September history, however, they set a far more significant challenge to assumptions that are shared a good deal more widely. In fact, you might say that the $8.2 million paid for...