We tend to think of teaching as the point at which learning gives way to instruction. First, we acquire knowledge. Then, presumably, we become qualified to share it. But I’ve never experienced teaching as the end of learning. Quite the opposite. Some of my most interesting learning happens when I’m the one doing the teaching.

That may sound backward. After all, the expectation is that the teacher comes prepared with something to offer. And we should. Preparation matters. Knowing the material matters. But there is a difference between walking into a room with knowledge and walking out with exactly the same understanding you brought in. If that is all that happened, I would wonder whether I had missed part of the opportunity.

A question can expose an assumption I did not realize I was making. Someone’s lived experience can reveal a nuance that was absent from the textbook, the research, or my own professional practice. A person can understand every word I have said and still ask, ‘But what does that mean for someone in my situation?’ Now we are somewhere interesting. I have to think again—not because I did not know the subject, but because knowing a subject and understanding all the ways people encounter it are not the same thing.

I think we underestimate this part of teaching because we are so accustomed to describing it as a transaction. One person has information; another person needs it. A fee may be exchanged, a lesson delivered, a certificate earned. Fine. But the intellectual work is relational. The exchange can sharpen the teacher as much as it equips the student. It requires me to listen, adjust my language, test the limits of an explanation, and recognize when a familiar idea is not landing the way I intended. The knowledge I bring into the exchange matters, but so does what the exchange reveals. I may leave with a better explanation, a different question, or an understanding I hadn’t anticipated. That, to me, is the art of teaching.

That is also why expertise alone does not make someone a good teacher. I have met people who knew an extraordinary amount about their field but could not make the subject accessible to someone encountering it for the first time. And I have watched people with deep knowledge discover a better way to explain something because a learner asked the question nobody else had thought to ask. The craft is not simply having the answer. It is knowing how to open the subject up without emptying it of its substance.

When I call teaching the highest form of leverage, this is where I begin. Not with a product. Not with the promise that you can record something once and collect money while you sleep. We have already had that conversation about passive income: work does not disappear simply because its value can continue after the original effort. Teaching offers a different kind of leverage first. It makes the knowledge itself more useful, more precise, and sometimes more expansive through the very act of sharing it.

When Knowledge Learns to Travel

Then there is the second dimension of leverage, the one people recognize more readily. What I have taught in a space does not have to remain confined to that space. A question that comes up repeatedly may tell me there is a larger conversation worth having. A concept I have explained in several different ways may become a framework. A workshop may reveal the bones of a book chapter. A chapter can teach someone I will never meet. A course can guide someone through the application of an idea at a time when I am not available to sit beside them.

This is not about copying the same material into five formats and calling it a strategy. A book has to do something a live presentation cannot. A classroom allows for questions and adjustments that a book cannot make in real time. A keynote has a different rhythm and responsibility than a course designed for sustained practice. The underlying intellectual work can be shared, but the form changes what the audience can do with it. That distinction is part of the craft.

I also resist the notion that teaching only counts when it happens in a classroom. A well-written book teaches. A thoughtful public conversation teaches. A speaker who helps an audience see a system differently is teaching. So is the professional who takes a complicated process and makes it understandable without pretending it is simple. The setting changes. The obligation to think carefully about what someone needs to understand does not.

For those of us with more than one professional interest, this matters in a particular way. We are often encouraged to choose a lane as though knowledge gained in one part of life has no business appearing in another. But teaching has shown me that ideas can cross boundaries. The discipline of explaining something clearly in one field can improve how I approach another. A question about access in one context may make me notice a similar barrier somewhere else. That does not mean every subject is interchangeable. It means the habit of inquiry can travel, and the connections are often where the richest thinking begins.

Perhaps those of us who work across disciplines notice these connections more readily because we’re accustomed to moving between different kinds of knowledge. But the principle isn’t limited to people with multiple professional interests. Every meaningful exchange creates the possibility that someone else’s question will illuminate something we had not considered. And that brings me back to where I began: teaching is not simply the delivery of knowledge. It is a relationship through which knowledge itself can evolve.

Of course, the ability to extend an idea brings responsibility with it. Every time knowledge moves into a new setting, there is an opportunity to lose context, flatten a difficult issue, or make a claim sound more certain than the evidence permits. I cannot treat a memorable phrase as a substitute for a sound argument. Nor can I assume that because an explanation worked for one audience, it will serve another without reconsideration. Leverage should expand access to understanding, not multiply misunderstanding.

This is why I am more interested in developing a body of work than producing an endless assortment of things. A book, a talk, a course, or a framework should not exist merely to prove that I can create one. Each should carry a piece of the thinking forward. Sometimes that means going back to the classroom, the client conversation, or the audience question and revising what I thought was finished. That is not a detour from the work. It is the work.

My 2 Cents

There is something humbling about teaching if we are willing to let it be. We enter prepared to share what we know, and the exchange reminds us of what we have not yet considered. That does not diminish expertise. It gives expertise room to mature.

And yes, teaching can become speaking, writing, courses, frameworks, and other intellectual assets. I see the value in that, especially when the alternative is requiring one person to repeat the same explanation forever. But the highest form of leverage is not the number of formats we produce. It is what happens when knowledge becomes clearer through the exchange and then becomes useful beyond the person who first held it.

So I would ask a different question of anyone sitting on years of experience: What have you learned that someone else deserves the opportunity to understand? And just as important, what might you learn about it when you finally begin to teach?

Keep Thinking

Speaking Is Not Visibility — It’s Transmission
Speaking creates lasting value when knowledge travels beyond the speaker and becomes understanding someone else can use.

Why Everything You Create Should Outlive the Moment
An idea’s first use need not be its last. The real opportunity is to develop work that continues creating value beyond its original purpose.