Thinking from First Principles
Stop copying existing solutions and learn to deconstruct complex problems down to their undeniable truths. Master the mental move of stripping away conventional assumptions, identifying core physical constraints, and rebuilding original answers from the ground up.
Like Duolingo, but for Thinking from First Principles. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 11 levels across 2 sections, about 22 minutes end to end, roughly 4 days at five minutes a day. It moves through Stripping a Problem to Its Bones and Building and Testing from Zero. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in Thinking from First Principles
- Reasoning by analogy copies an existing form and makes incremental adjustments to it
- Fundamental principles thinking strips a problem down to its essential physical requirements rather than tweaking a predecessor
- Analogous tweaks prevent order-of-magnitude improvements because legacy constraints are inherited without question
- Each 'why' moves one layer deeper from arbitrary policy toward physical or economic realities
- Early answers usually cite company habit or policy ('that's when the shift starts')
- Fundamental limits (like physical loading speed or labor hours) only appear once administrative habits are questioned
- Conventional wisdom optimizes for social safety: no one gets fired for choosing what everyone else chooses
- Fundamental principles ask what is objectively true and cost-effective, ignoring peer consensus
- Conforming to industry consensus protects decision-makers from reputational risk if things go wrong
- Semantic bundling packages essential functions together with expensive, unnecessary industry standards under one label (like 'cleanroom')
- Fundamental principles breaks down the label into what is actually needed (clean air in a tiny zone, not a massive building)
- A first principle is an irreducible physical or functional reality that cannot be broken down further in that context
- Materials, current pricing, and traditional kit designs are existing solutions or conventions, not basic truths
- Identifying basic needs like light transmission and heat retention strips away unnecessary standard practices
- A raw-material audit strips away existing supply chain markups, machining habits, and assembly fees
- The spot price of the fundamental ingredients (like carbon, iron, or lithium) defines the absolute theoretical cost limit
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Thinking from First Principles the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
Imagine an engineer designing an electric van. What does fundamental principles thinking look like?
Get it right to open this lesson and 10 more in the app.
Where Thinking from First Principles takes you
- 1
Stripping a Problem to Its Bones
- Spotting Reasoning by Analogy
- Boiling Problems Down to Ground Truths
- 2
Building and Testing from Zero
- Assembling New Solutions from Core Truths
- Stress-Testing Your Fundamental Model
2 sections · 4 units · 11 levels. Built to play, not to enroll.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
Thinking from First Principles is taught in the Storyteller style: every lesson is a story. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Thinking from First Principles today.
Download Tomo, search Thinking from First Principles, and play your first lesson in under a minute.