“I don’t know what I know”
This is the last stage and the one you should be aiming to get at with any skill that is beneficial to your overall growth and intellectual development. At this stage, you are so proficient in the area you have been studying, that you perform the tasks requiring the skill automatically, without even thinking.
Many compare this stage to intuition, which has some grounds. With encoded knowledge, you often make decisions because they “feel” right, but you struggle to explain how do you know this. When information is so deep-rooted in your brain that you just “feel” the right solution.
This is the mastery, and this is what you should aim to achieve in all areas of your life for the beautiful intellectual transformation.