at about 35 min he talks about least resistance. I think often thats the killer in plays. Just like on D. You can't go around people you need to go thru them. Thats what creates the had holes on D
When they get to the game film. It becomes clear how the formation influenced the LBs and created holes. It also helps when the Oline makes good blocks.
D and P were football savants and genuises.The freeze option is the precursor and father of both the RPO and the spread offense. And it started right here with both of them.