Knowledge is power, and that is indisputable fact. In this world, what makes someone unique? Knowledge does not just come in the form of memorizing random facts or knowing how to study for academics, but it also comes in the form of skill and expertise. No one is an expert in every topic.
In any situation, knowing what to do makes a world of difference on the outcome. This is especially the case if the other people do not know what they are doing. Take for example boxing or martial arts. Knowing MMA or how to box along with some amount of experience will put you a world ahead of those who don’t.