First Principles
Break a problem down to irreducible truths and rebuild from there.
"Reasoning by analogy is fast. Reasoning by first principles is right."
What is First Principles? Break a problem down to irreducible truths and rebuild from there. Strategic resets when industry assumptions stop holding.
Musk on rockets: 'What are the raw materials? What do they cost?'
Strategic resets when industry assumptions stop holding.
Every annual plan: list five assumptions you'd defend, then attack each one.
When the answer to 'why do we do it this way?' starts with 'because we've always…'
This term appears in this learning path
You're asked to cut battery cost. Pick the reasoning style.
Pick a reaction to First Principles
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The full taxonomy entry
Every concept in the Atlas uses the same structure — so First Principles can be compared, recombined, and cited like an element on a periodic table.
- Business
- Leadership
- Government
- Healthcare
- Education
- Sales
- Marketing
- AI
- Negotiation
- Media
- Public Policy
- Relationships
- Where in our org would First Principles most often show up unnoticed?
- Which metric, ritual, or contract clause quietly rewards First Principles?
- If we removed every payoff for First Principles, what behavior would replace it?
- Who benefits when First Principles persists — and who pays the cost?
- People defend the status quo using the language of first principles.
- Decisions cluster around the easiest narrative rather than the strongest evidence.
- New data changes the slide deck but not the decision.
- Anyone naming the pattern is treated as the problem.
Every Atlas entry is a node in a knowledge graph. See the related rail below to follow the connections.
See First Principles through 2 lenses
Each layer of the Incentives OS reframes this concept with its own thinkers, vocabulary, and diagnostic question.
Do you actually know First Principles?
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Which best describes First Principles?
Worked example, counter-example & concept map
On-demand AI analysis grounded in the Lab's research. Cached on your device after first run.
When you encounter First Principles, your prefrontal cortex has to do extra work to override the automatic response — and that override budget is finite.
Executive control, planning, impulse override, working memory, System 2. First thing to go offline under stress, fatigue, or low blood sugar. Why your 4pm decisions are worse than your 9am ones.
See Prefrontal in the Brain Atlas →Picked for you, from the Atlas
Ranked by shared learning paths, overlapping chips, and what you've saved.
Prefer the simplest explanation consistent with the evidence.
Ask 'and then what?' — twice.
Know the perimeter of what you actually know.
Solve forward by asking how to fail.
Models are simplifications — never the thing itself.
Using an authority's opinion as evidence, regardless of its merits.
Send the card, not just the link
A pre-rendered social card with the title, eyebrow, and URL. Copy the link, post it anywhere, or download the SVG for slides.
More definitions to follow
Every term in the Atlas connects to a dozen others. Pick any of these and see where it takes you.
Dacher Keltner's research: the emotion of encountering vastness reliably reduces self-focus and inflammation, and increases prosociality.
Temporal illusion where the first moment after a fast event seems stretched.
Per-view payouts reward volume and frequency over craft and depth.
Cut options by knocking out one attribute at a time, hardest threshold first.
Use-it-or-lose-it allocations push fleets to fish hard before quotas tighten.
Threats to identity activate strong defensive responses.
Optimizing in a small region while missing a better global solution.
Sales bonuses and prescriber relationships fueled mass over-prescription and an addiction crisis.
Meaning beyond the task multiplies motivation.
Time spent improving the tool is not time stolen from the work.
Otto Scharmer's U-shaped process for moving from habitual response to sensing what wants to emerge.
The brain evolved to reason adaptively, not always truthfully, to reduce the cost of errors.