OODA loops might look superficially like the same concept, but that's hiding a lot of the complexity of it. The difference between the scientific method and OODA is that OODA is a framework for making decisions under extreme uncertainty. It's not just the feedback loop of continuous learning, but its about recognizing that your adversaries also have their own OODA loops and that if your loop operates faster than theirs, you have a distinct advantage. This implies both that you should make decision faster than your opponent, or that you should make your opponent make slower decisions (such as by causing confusion). Very powerful tool.