But honestly, do you think they have like several five or six play sequences that they could quickly make into a script on the fly or is the definition of a script that you practice it till it’s memorized and that’s why it looks so different than the rest of the game?
There are in game adjustments that can be had on the sideline between series.
But for opening scripts, they don't just dial up and sequence plays that they think will work. They watch hours of film of the opponent, and how they will play certain things, and what their tendencies are. It takes a lot of work and time putting this stuff together. Then practicing it, and rehearsing it in the walk-through.
As soon as you run it in the game, most teams will adjust. So now you have to adjust to the adjustment. This is where it gets hard for Geno. His head is swimming after the opening script runs out and he doesn't trust what he's seeing.
NFL defenses have gotten incredibly exotic over the last 10 years. Scoring is down across the league.
In a great irony, where the league has softened up the sport to avoid lawsuits, but also increase scoring (offense sells tickets.) Defenses have been forced to adjust. So instead of being more physical (which just leads to penalties and fines), they've gotten more cerebral. They mask their coverages pre-snap more than ever. They run stacked fronts more than ever with guys dropping and you don't know who is coming. People talking 4-3 vs. 3-4, that isn't really the sport anymore. It's never been harder to play QB in recent years, even though you can't breathe on them, again a great irony.