Elon Musk on first principles, being underestimated, and manufacturing reality

Welcome back to the Z Fellows newsletter! Every Monday we share 3 ideas - to help you build companies, ship products, and create your life's work.

1: Elon Musk on first principles

“Boil things down to the most fundamental truths and reason up from there.”
— Elon Musk

When SpaceX started, the cost of a rocket was $65 million. Musk didn’t accept that number. He broke the rocket down into raw materials — aerospace-grade aluminum, carbon fiber, copper, titanium — and found the materials cost about 2% of the rocket price.

The rest was markup, tradition, and assumptions no one had questioned.

Most founders inherit the assumptions of their industry. They accept the price of cloud infrastructure, the cost of customer acquisition, the norm for employee compensation — without asking why.

First principles thinking is uncomfortable because it requires you to question things that feel settled. But that discomfort is the moat.

Pick one assumption you’ve never questioned about your business. Start there.

2: Being underestimated

“When something is important enough, you do it even if the odds are not in your favor.”
— Elon Musk

In 2008, SpaceX had three failed launches. Tesla was weeks from bankruptcy. Musk was sleeping on friends’ couches. Multiple aerospace experts said both companies were doomed.

Being underestimated is one of the most powerful positions a founder can occupy. When no one believes in what you’re doing, there’s no ceiling on how far you can exceed expectations.

The best founders have learned to use skepticism as fuel. Every “that’s impossible” is a clue that the opportunity is real.

Consensus is the enemy of breakthrough. If everyone agrees it’s a good idea, it’s probably not that interesting.

If no smart person has tried to talk you out of your idea, you’re probably not aiming high enough.

3: Manufacturing reality

“The first step is to establish that something is possible — then probability will occur.”
— Elon Musk

One of Musk’s underrated skills is the factory. He obsesses over manufacturing the way most CEOs obsess over the product. He believes the real innovation isn’t just the thing — it’s the machine that makes the thing.

Most founders think about what to build. Great founders think about how to build it faster, cheaper, and at scale. The production system is a product too.

When Tesla was struggling to hit Model 3 production targets, Musk moved into the factory. He slept on the floor. He debugged the line in real time.

You can’t manage what you’re not close to. Presence is a strategy.

The best founders don’t just design the product. They design the system that builds the product.

Best of The Week

See you next Monday,

- The Z Fellows Team

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