First Principles

Break down supposedly impossible problems by separating physics from convention, then rebuild solutions from scratch. This follows Aristotle's method, popularized by Musk at SpaceX when he questioned why rockets cost $65M and found the raw materials were under $100K. You'd use it when conventional solutions aren't working, when analyzing costs for dramatic savings, or when everyone says something can't be done. Claude structures the breakdown into assumptions, atomic components, and validation steps, but you need the domain expertise to actually challenge what's真 versus what's just industry habit. Works best when you're willing to question everything, not just optimize around the edges.

skills.sh installs: 397
GitHub stars: 150
last updated: Aug 21, 2026

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$ npx -y skills add guia-matthieu/clawfu-skills --skill first-principles --agent claude-code

Installs into .claude/skills of the current project.

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First Principles Thinking

Break down complex problems to their fundamental truths, then reason up from there. Master Aristotle's ancient method modernized by Elon Musk to solve seemingly impossible problems.

When to Use This Skill

Facing a "impossible" problem where conventional solutions don't work
Challenging industry assumptions that everyone accepts as truth
Pricing or cost analysis to find dramatic savings (like Musk with batteries)
Product innovation when iterating on existing solutions isn't enough
Strategic decisions where analogies to other companies may mislead
Breaking through mental blocks when you're stuck in conventional thinking

Methodology Foundation

Aspect	Details
Source	Aristotle (384-322 BC), modernized by Elon Musk
Expert	Aristotle called it "the first basis from which a thing is known"; Musk applies it to SpaceX, Tesla, and every venture
Core Principle	"Boil things down to the most fundamental truths and say, 'What are we sure is true?'... and then reason up from there." - Elon Musk