The depth of everyone’s knowledge varies from subject to subject. I have a deep understanding of many areas of securities law, but a very shallow understanding of physics. (I’m not even in the wading pool.) But, even in subjects I teach—business associations, securities law, accounting for lawyers—the depth of my knowledge varies from topic to topic.
When I’m teaching the Securities Act registration exemptions, my knowledge base is very deep. I research and write primarily in that area. I know the law. I know the lore. I know the policy.
In other areas, my knowledge is much shallower. In some cases, I know just enough to teach the class. My business associations class sometimes touches on entity taxation issues, but I’m far from an expert on entity taxation. (My tax colleagues would say “far, far, far.”)
One’s knowledge deepens over time, of course. That’s one of the great joys of becoming an expert, whether you’re a law professor or a practitioner. I know more now about every topic I teach (including entity taxation) than I knew when I began teaching 27 years ago.
Several years ago, I decided to teach a course on investment companies and investment advisers. I started