I'm not sure how much Trestmans age was a factor, but at least with college coaches you've been around the players who are about becoming the next wave of the NFL. The only comparison to college is if he was a lower division college coach. He was in Canada for a long time and not coaching quality athletes, coaching against elite athletes or even coaching under the same set of rules. It's a different game, and I think that has showed up in how poorly coached this team is in terms of penalties and special teams stupidity. There is no attention to detail.