Dive into a subject matter, delve into the deep, focused, detailed, invisible knowledge about that topic. Seek to learn the ins and outs, nooks and crannies, the practical and theoretical understandings. Research, explore, discover, develop an insatiable desire to know more, dig deeper. A higher understanding, a higher learning, the nuances and insightfulness. Expert level information and understanding, so that the knowledge is internalized and easy to articulate to others in a natural and instinctual way.