I think this happened to CPJ in one game when Tevin was quarterback. CPJ had promised to play Vad at such and such a time (3rd series first quarter or 1st series second quarter) and it did not happen. A reporter asked him about that after the game. He said, "Things happen."Agree with much of this, but.....
Having a preset plan to play a guy for x amount of series then insert guy 2 is a slippery slope. What if guy 1 is hot as fire, do you yank him because of your plan? If you do, what does that say to your team? What if guy 2 sucks and you lose, what effect does that have on your team and qb's? If you don't, what does that say to guy 2 and what does that do to his psyche?