Again, you can go fast, or you can slow it down. Mix up the counts and make the defense watch the ball, rather than just timing your snap count.
The no huddle offense is the best way to effectively and strategically call plays. Ninety percent of coaches will just call a play that they think will work.
That is pretty much just guessing. Say you call a sweep play, and the defense comes out and is aligned perfectly to stop it, what do you do? You are stuck running a play that goes right into the teeth of the defense.
There are occurrences where your athletes will bail you out of a bad play call. When you do not have a dominant team the no huddle offense becomes even more vital. If you are facing a superior team, calling the right play at the right time is absolutely vital.