When I was in undergrad, many many moons ago, there were times when the last final of the semester was on the 23rd and you never knew when that exam would even be graded. I believe Econ classes traditionally had the last possible exam time.
"He makes it really easy on you as a coach because he has tremendous football instincts," Michigan tight ends coach Jay Harbaugh said. "Things come really naturally to him. He doesn't have to see things too many times. He has a good sense for how things should look and feel, and he's a tough, physical guy."