He is in fact a very bright guy. That said, calling offensive and defensive plays is a rare talent. I heard a former successful NFL coach get asked why so many retreads get hired as coordinators in the NFL. His answer was just that. Very few guys have that rare talent. I don’t think Butler has that kind of talent. He might be a great teacher.Last year he said he couldn't coach up the young DB's because he had to pour into the starters. Then after getting promoted he goes on about how his strength is outsmarting other coaches. Glad he's gone.