A friend once told me, "You don’t need to be a great swimmer to be an amazing coach, but it sure does help." The athletic experience is earned, and easily relatable to immediate challenges any swimmer faces. But coaching is about sharing what we've learned. So while initially, I understood a great deal about swimming, breaststroke had never 'come easily' - nor been taught to me.
Perception is knowing what you do and don’t understand - through any sense. To learn how to swim we focus on those that resonate best with our learning style. And most learners are highly visual.