Elon Musk’s Learning Method Part 2: Learning Transfer and Connecting Knowledge Across Domains

This is part 2 of a 2-part series. Read part 1: the semantic tree and first principles thinking.

Part one covered the semantic tree and first principles thinking. This part explores the second rule of Musk’s method: connecting knowledge across different domains. This is where the real power of accelerated learning kicks in.

The Second Rule: Connect Everything Together

Now here is the second part of Musk’s method. He does not learn one subject at a time in isolation. He learns lots of different things and actively looks for connections between them.

This is called learning transfer. It is when you take a principle from one domain and apply it to another. The idea is not new, but Musk does it systematically.

He reads across physics, engineering, economics, and artificial intelligence. Then he pulls insights from one field to solve problems in another. He has said that the key insight for making Teslas batteries cheaper came from studying how the video game industry reduced component costs. A video game insight applied to car manufacturing.

I have started doing this myself and it works. I learned about storytelling from playing video games. Then I used those same techniques for presentations at work. The rules for keeping people engaged are similar whether you are designing a game level or giving a talk.

Another example. I read about Scott Young’s accelerated learning methods and noticed the overlap with Musk’s approach. Young talks about holistic learning where you build a web of connections. Musk talks about the semantic tree. Different names. Same basic trunk idea.

The reason this works is how your brain is built. Your brain is a connection machine. It learns by linking new information to existing knowledge. When you learn in isolation, there is nothing to connect to. The new information floats around and eventually disappears.

This is also why ancient memory techniques work. The method of loci, memory palaces, all of them rely on connecting new information to something you already know.

Why This Matters For You

You do not have to be Elon Musk to use this method. You do not need a special brain or tons of money. You just need to change your approach.

Next time you want to learn something, try this.

First, ask yourself what the core principles are. Find the trunk. Do not worry about the details yet. Just get the big picture.

Second, look for connections. When you learn something new, think about how it applies to things you already know. Your brain loves making these connections.

Third, be patient with the trunk. Fundamentals are not flashy. But they are the only thing that makes the exciting stuff possible later. Discipline over motivation applies here.

My Personal Experience

I have been using this method for a few years now and it has changed how I learn everything.

The biggest difference is that I no longer feel overwhelmed. Before, I would look at the mountain of information and freeze. Now I just look for the trunk. I spend a few days understanding the fundamentals. Then I branch out from there.

I tried this with investing. Instead of buying fifty books, I first made sure I understood the core idea. Investing is trading money today for more money tomorrow. That is the trunk. Once I understood the trunk, the branches were easy.

Same thing with programming. I had tried to learn to code multiple times and failed. Then I stepped back and asked: what is programming, really? It is giving instructions to a computer. That is the trunk. Once I understood that, everything clicked.

Common Mistakes People Make

Mistake one: thinking you understand the trunk when you really just heard about it. There is a difference between recognizing an idea and understanding it. The trunk requires real understanding, not just familiarity.

Mistake two: staying in the trunk forever. Some people get stuck on fundamentals. You learn the trunk well enough to navigate, then you branch out. The branches will teach you more about the trunk.

Mistake three: never connecting subjects. The real power comes from transfer. If you learn one subject in isolation, you are missing most of the benefit.

Mistake four: consuming instead of building. Reading about the trunk is not the same as using it. Passive consumption feels like learning but it is not. The gap effect technique shows that testing yourself is far more effective than re-reading.

How to Start Using This Today

Pick one subject you have been meaning to learn. Spend one week on the trunk only. No advanced tutorials. No deep dives. Just the fundamentals. Read a Wikipedia article. Watch a beginner overview. Write down the core principles in your own words.

Then spend the next week branching out. Pick one area that interests you and go a little deeper. Keep coming back to the trunk. Ask yourself how each new detail connects to the fundamentals.

At the end of two weeks, try to explain the subject to someone who knows nothing about it. If you can do that clearly, you have built your semantic tree.

The flow state you can reach when learning becomes much more accessible because you are not fighting confusion all the time.

Frequently Asked Questions

Can I use this for physical skills like sports or music?

Yes. The trunk for guitar is how to produce a clean sound and basic chord shapes. The trunk for a sport is the fundamental movement pattern.

Do I need to find the trunk myself or can someone teach it to me?

A good teacher will show you the trunk. A bad teacher will throw leaves at you. If you are self-studying, read multiple overviews and find what they have in common.

What if I have already started learning something the wrong way?

You can rebuild your tree at any time. Step back, identify the trunk, and reorganize your knowledge around it. It is not too late.

Does this work for every subject?

It works best for subjects with clear conceptual structure: math, science, programming, business, philosophy. For purely procedural skills, understanding the principles still helps.

The Bottom Line

Learning does not have to be overwhelming. It is not about how many books you read or how many courses you take. It is about building a structure. Start with the trunk. Add branches. Let the leaves fill in naturally.

Musk’s method is not complicated. Find the fundamentals. Connect ideas across fields. Test your understanding by doing.

That is it. Everything else is just leaves.

Read previous: Elon Musk’s Learning Method Part 1: Semantic Tree and First Principles Thinking