I understand people who are resistant to placing their faith in numbers. It must be especially threatening to those who have built a professional identity through a lifetime of success either without the use of, or more likely, in direct opposition to analytics. To be told your entire life you are great, knowledgeable, or both, and to then have those core values, really your entire sense of self, challenged must be difficult. To value what you see, what you have done, everything you have been taught, well, this is a difficult thing to toss away, even in the face of overwhelming evidence.
So when I write that Don Mattingly is an idiot, please understand it’s done with affection, understanding and compassion. He was a great, great player. He’s from Indiana. But idiot he is.