So how old is Kirwan anyway? Paul Brown isn't on this list? George Halas and Tom Landry aren't on the list? Sammy Baugh, Otto Graham, Bob Hayes, Johnny Unitas, Sid Gillman, Dick Butkus, Deacon Jones, Don Hutson, Larry Wilson, and a host of other players and coaches who drastically changed the game don't make his list but Marshall Faulk does?
What a waste of time. Kirwan should be forced to refund his paycheck.
Bill Walsh's contribution is a molecule compared with what true innovators like Brown, Landry, and Gillman brought to the game. He was a sharp guy and an excellent play caller but he wasn't really much of an innovator, he simply cobbled together what he learned from Gillman and others before him and gave it a fancy title.
Oh and long before Ronnie Lott came along there was a guy named Dick "Night Train" Lane who also made the switch from Corner to Safety and was the most feared hitter of his day.
I could go on and on...