First Principles

Strip a problem down to what you know is true, then rebuild your reasoning from there instead of copying what everyone else does.

Most decisions are made by analogy — do what worked before, or what everyone else does. It is fast, but it silently imports every assumption you copied.

First-principles thinking breaks a problem down to what is verifiably true — the physics, the math, the hard constraints — and treats the rest as choices.

The cost is effort; reasoning from scratch is slow. The payoff is originality — conclusions no one else reaches, because you are not anchored to the crowd.

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Mental Models

#01

Reasoning

Reason from the ground up

First Principles

Strip a problem down to what you know is true, then rebuild your reasoning from there instead of copying what everyone else does.

Most decisions are made by analogy — do what worked before, or what everyone else does. It is fast, but it silently imports every assumption you copied.

First-principles thinking breaks a problem down to what is verifiably true — the physics, the math, the hard constraints — and treats the rest as choices.

The cost is effort; reasoning from scratch is slow. The payoff is originality — conclusions no one else reaches, because you are not anchored to the crowd.

Apply first principles

#01

State the problem plainly

Write the goal in one sentence, with no jargon and no proposed solution baked in.

List the bedrock facts

Separate what is physically or logically true from what is merely convention or assumption.

Is this a law, or a habit?
Who benefits from this assumption?

Rebuild upward

Construct a fresh solution using only the bedrock facts. Compare it to the conventional answer — the gap between them is your edge.

When you are stuck, the assumption you never questioned is usually the one holding you back.

First Principles

Strip a problem down to what you know is true, then rebuild your reasoning from there instead of copying what everyone else does.

Most decisions are made by analogy — do what worked before, or what everyone else does. It is fast, but it silently imports every assumption you copied.

First-principles thinking breaks a problem down to what is verifiably true — the physics, the math, the hard constraints — and treats the rest as choices.

The cost is effort; reasoning from scratch is slow. The payoff is originality — conclusions no one else reaches, because you are not anchored to the crowd.

First Principles

Strip a problem down to what you know is true, then rebuild your reasoning from there instead of copying what everyone else does.

Most decisions are made by analogy — do what worked before, or what everyone else does. It is fast, but it silently imports every assumption you copied.

First-principles thinking breaks a problem down to what is verifiably true — the physics, the math, the hard constraints — and treats the rest as choices.

The cost is effort; reasoning from scratch is slow. The payoff is originality — conclusions no one else reaches, because you are not anchored to the crowd.