Those who know, do. Those that understand, teach.

The Gap Between Doing and Explaining

There's a real difference between being good at something and being able to explain it to someone else. You can be a brilliant problem-solver without ever articulating why your solutions work. You can have years of experience and still struggle when someone asks you to walk them through it step by step. That gap between knowing and understanding is where a lot of frustration lives.

The insight here cuts both ways. On one hand, if you can't teach something, you probably don't understand it as deeply as you think. Teaching forces you to organize your knowledge, find the gaps, anticipate confusion. It's actually a test of understanding. On the other hand, some of the best teachers aren't the ones who do the most—they're the ones who've spent time thinking about how it works, the principles underneath, the common pitfalls.

This matters today because we tend to worship the doer. We celebrate the person crushing it in their field. But we need the teachers too, the ones who can translate knowledge into clarity. If you want to grow beyond just executing well, teaching—whether formally or by helping colleagues think through problems—is how you actually deepen what you know.