He's old enough to know better. That's a good place to start right there.
Whether that's enough to earn veteran Jon Jansen a starting job at right tackle for the Lions this season remains to be seen.
Jansen was getting first-team practice reps ahead of incumbent starter Gosder Cherilus again Monday. And more than a week into training camp, it's becoming clear this isn't simply for show, or to send a message, or even a case of easing Cherilus back from April knee surgery.