When I was seven, my parents signed me up for swimming lessons. For the first three days, the teacher discussed buoyancy, backstroke, and breathing. We dunked our heads into basins of water and blew bubbles. We never even got our feet wet.
The next weekend my parents took us to a pool. My father, eager to see what I had learned, asked me to demonstrate. I explained that I would need a blackboard. This did not impress my father. He walked me to the deep end of the pool deck, picked me up and promptly threw me into the water. After a moment of shock, I began swimming.
This method of instruction, let alone fathering, may not be in favor today. Personally, I remember feeling rather proud of how quickly I learned to swim. But whatever you think of the methodology, there is a lesson to be learned. The best way to own new information is to apply it. Few of us would want to be operated on by a surgeon who aced his written exams but never wielded a scalpel. There is a reason that driver education courses take place in the car as well as the classroom.