Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so.
But I was always a bit of a gypsy, anyway. I spent five years at Oklahoma State, five years at Miami and moved on after winning the national championship, and five years with the Cowboys. So, I was ready to move on. We won back-to-back Super Bowls, and I felt that I accomplished what I wanted to acc