Scrum requires course correction at every turn

Scrum is a process of correction. You don't just start doing it and then everything just magically works. The first Sprint will have failures, processes that didn't work, procedure that wasn't followed, ideas that didn't sink in. At the end of the Sprint you review and course correct. Individuals on the team constantly strive to hold up their end of the Scrum contract, while the whole teams looks for ways to change, adapt, evolve, and innovate. It's just like sailing, there's constant course correction that goes from coarse to fine as you get closer to port.