Based on his experiences as a QB, collegiate and pro.
Based on his experiences as an assistant to one of the better OC's in the league.
Based on his tool box that has Allen, Diggs, Davis, Cook, Knox, Kincaid and some other choice pieces.
And based on the fact he had the #2 Offense in the NFL as a rookie OC though many consider he did not have the best roster.
How's that?