Yeah, I think this is important. Given how many different looks that Patriots have shown on tape that you have to account for, how much time are you going to spend accounting for all the different possibilities of looks they haven't put on tape? There are only so many practices and hours in the day, even with two weeks to prepare. Belichick has said similar about the Wildcat - it's not that they hadn't considered the possibility (or recognized they might be vulnerable to it), it's just that it doesn't seem like a good use of precious time to worry about something you've never seen before.So you need to prepare for the unknown?
I am not sure how you do this. Is it known unknowns? Or unknown knowns? Or the tricky unknown unknowns?