Explaining First Principles, the Thinking Method Elon Musk Greatly Values
First principles means breaking a problem down to the most basic, essential laws and thinking from the root, instead of copying other people’s experience or assumptions. Put simply, it means asking until you reach the original underlying logic.
Take boiling water as an example.
Ordinary thinking: to make water boil, make a fire, because that is how people have always done it.
First-principles thinking: water boils because its temperature reaches 100 C. So as long as you can raise the water to that point, you do not necessarily need fire. You could use electricity, solar energy, or another method.
The key difference is that first principles first clarifies the essential reason water boils, then looks for possible methods based on that root principle, instead of blindly copying traditional experience.
Elon Musk strongly values first-principles thinking and has repeatedly mentioned how he used it when starting companies. He believes many people solve problems by analogy, borrowing existing experience from others, while first principles can help you break convention and find innovative solutions.
Musk’s classic example:
In rocket manufacturing, traditional rocket companies believed rockets were extremely expensive. One rocket could cost tens of millions or even hundreds of millions of dollars. Musk did not accept this industry consensus. He used first principles to rethink it.
The essential question: why are rockets expensive?
He found that much of the cost came from materials such as aluminum alloy, titanium, and carbon fiber.
Breaking it down further: the materials themselves are not especially expensive. What is truly expensive is the traditional manufacturing method and complex supply chain.
Innovative solution: SpaceX designed rockets from scratch and made reuse possible, sharply lowering manufacturing costs.
How can first principles change your life?
When you face problems in life, do not directly apply other people’s experience. Try this instead:
Ask yourself: what is the essence?
Derive from basic laws, without being limited by inertia.
Look for innovative solutions and step outside the traditional frame.
With first principles, you may discover that many things in the world that seem “obvious” can actually be redefined.
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