Principle

Collect asininities — avoiding the foolish beats chasing the brilliant

Edge comes from subtraction, not addition — keep a mental list of what to avoid and refuse it relentlessly.

Principle

Sell only what you'd buy from the other side

Win-win transactions are more durable AND more profitable than adversarial ones over long horizons.

Principle

Know the edge of your competency — overconfidence kills faster than low IQ

Honest mapping of your circle of competence is a larger source of compounding than raw intellectual firepower.

Principle

Four above-average investments is adequate diversification

Concentration into genuinely understood positions beats index-adjacent diversification for operators with real informational edge.

Principle

Figure out what works, do it; figure out what doesn't, avoid it — relentlessly

The strongest operating doctrine is an empirically iterated dualism: keep what compounds, cut what doesn't, and never stop the iteration.

Principle

Bureaucracy can't form where no one is present

Structural absence is more reliable than cultural vigilance as a defense against sclerosis.

Principle

Trust is one of the greatest economic forces on earth

Trust is a compounding economic asset; build it by being the kind of person others want to be early to.

Principle

Don't believe something just because believing would make you happier

Don't contort your world-model for downstream psychological benefits; the benefits aren't worth the corruption.

Framework

The Map Is Not the Territory — investing edition

Audit the qualitative reality behind the numbers before extrapolating. The conventional financial world is reliable for engineering but asinine for business.

1. Q1: Is management honest? (integrity screen)
2. Q2: Is the product good for buyers? (long-term sustainability)
3. Q3: What's the ongoing capex burden? (airline vs cereal)
4. Q4: Is industry structure ruinously competitive? (capital-intensive + symmetric = bad)
5. Q5: What tech changes could obsolete this? (Kodak test)

Framework

Punch-Card Investing — four pounces in a lifetime

Don't optimize for volume of decisions; optimize for asymmetry of the handful of decisions that matter.

1. Phase 1 (Patient): wait, study, survey industries + businesses — expect most candidates fail
2. Phase 2 (Aggressive): when the criteria line up, take a large concentrated position
3. Phase 3 (Hold): size means you shouldn't need to rotate — compound undisturbed
4. Phase 4 (Accept finitude): 4 winning pounces = successful lifetime; reject the narrative that good investors are always active

Framework

Costco's Deliberate-No System — a business you want to do without is as valuable as one you want

Product/market fit is as much about who you refuse to serve as who you serve. Design your exclusion mechanism first.

1. Step 1: List the customer types you explicitly DO NOT want
2. Step 2: Design a single filter that removes them all (membership, price floor, qualification)
3. Step 3: Measure the filter's cost vs the friction it saves (Costco: below 0.2% shrink rate)
4. Step 4: Let the culture + low-SKU discipline compound the advantage

Framework

Seamless Web of Deserved Trust — Mayo Clinic as business template

Build the team out of people who have earned the trust to act without permission, then remove the procedural drag.

1. Precondition: every participant must have DEMONSTRATED trustworthiness (this takes years — don't shortcut it)
2. Constraint: the web only scales with high-quality hires — one bad actor collapses the mechanism
3. Benefit: decision latency drops near zero; complex coordination without coordination cost
4. Failure mode: treating "trust" as a substitute for selection rather than a consequence of it

Framework

Win-Win vs Me-Win — two systems, two fates

The operating-system choice (win-win or me-win) is the single largest determinant of durability beyond one generation.

1. Check 1: Would each counterparty voluntarily re-enter the transaction?
2. Check 2: Does the system generate repeat business organically, or does it require extraction + replacement?
3. Check 3: What does the counterparty say about you when you're not in the room?
4. Check 4: 20-year view — is the moat the product or the asymmetric squeeze?

Signal

Big brands face a 100-year-profit-formula collapse

The 100-year formula of "own the brand + rent the shelf" no longer works when retailers and DTC brands both attack simultaneously. Big-brand durability assumptions in consumer-goods investing need to be revisited.

Signal

1880-2020 US stock returns were an anomaly, not a baseline

The "stocks return 8% real" heuristic that anchors retirement planning, endowment policy, and mutual-fund marketing is a retrospective anomaly being sold forward as a law.

Signal

Institutional sclerosis is pricing the young out of American cities

Young-person housing affordability in US cities isn't an economic phenomenon — it's a governance one. Expect the trend to continue because the governance structure rewards continuation.

Signal

Asian intellectual appetite for Munger-style thinking outruns US by an order of magnitude

A tectonic shift in where Western-style investing wisdom is most actively consumed. Audiences in Asia are treating foundational investing literature as operating manual, not intellectual history — the way US readers treated Graham & Dodd in 1950.

Opportunity

Per-dollar-year disclosure reform — the SEC's low-hanging regulatory fruit

Mandate per-dollar-year (size-weighted) return reporting for every investment professional. The math is elementary; the policy is obvious. No one's proposed it — the beneficiaries of the current regime are the ones who would write the rule.

Opportunity

Marine-architecture principles imported into urban residential design

Any developer/architect willing to borrow directly from marine architecture can produce high-density residential buildings with better amenities at lower cost than current practice — because the problem has already been solved 200 years ago.

Opportunity

Organize deliberate win-win transactions between US and China — reject hostility on both sides

A business / diplomatic lobby that explicitly rejects hostile posture and organizes discrete mutually-beneficial US-China arrangements can capture the coordination surplus that current policy forecloses.

Lesson

Kodak — PhD-chemistry monopoly + world's-best trademark, obsoleted to zero

Durable monopolies built on a specific technology are not durable against the technology being replaced entirely. "Permanent" in business means "until the substrate changes".

For any investment, the Kodak test: what single technology shift would obsolete this business, and how far away is it?

Lesson

Intel — ground-zero chip monopoly lost because leadership optimized for reported earnings

Frontier-capability businesses can only survive by re-earning leadership every cycle. Optimizing for reported financial metrics instead of underlying capability is the distinctive failure mode of dominant incumbents.

When incumbency creates the power to smooth earnings, that smoothing is usually the first signal of impending loss of the underlying advantage. Check whether the firm is investing for the next leap or coasting on the last one.

Lesson

Jack Welch's GE — me-win worked for 20 years, then destroyed the company

A me-win system can look like durable performance for 10-20 years because the extraction is still net positive. The turn comes when counterparties finally have alternatives and the system runs out of people to squeeze.

The Welch signature — quarterly earnings that always beat, suppliers squeezed, HR-driven forced ranking, serial stretch targets — should be read as a warning, not an achievement. Time-horizons on me-win systems are long enough to fool markets for a full career.

Lesson

Dexter Shoe — the $443M mistake of paying with Berkshire stock

Paying with appreciating currency (Berkshire stock) for a business that would imminently be disrupted is the worst possible combination — you're selling something that compounds to buy something that decays.

Never use appreciating equity as acquisition currency unless you are absolutely certain the target will still compound. The optionality cost of giving away your stock is usually underpriced.

Lesson

MIT built dorms so architecturally clever students got seasick in them

Professions that reward peculiarity ("make your mark") systematically ship bad product. The antidote is multidisciplinary borrowing — marine architecture, Mayo Clinic culture, Costco's SKU discipline — not within-profession reinvention.

Check any professional output for the peculiarity-as-art failure mode: is the designer solving a real customer problem, or signaling to peers within the profession? The answer is the forecast.

Tension

More brains + more money has made investing harder, not easier

Industry sophistication kills individual alpha in aggregate, even as the industry grows in headcount, AUM, and talent density.

Tension

Cities acting in their own rational self-interest block the next generation's housing

What's locally rational for incumbents is globally bad for entrants. Municipal self-interest and generational equity pull in opposite directions, with no institution mandated to resolve the conflict.

Tension

Early marriage + large families correlate with happiness — and are structurally declining

A social arrangement that produces higher self-reported happiness is also the one that's being voluntarily abandoned — suggesting either (a) the self-reports are wrong, (b) the freedom is worth the happiness cost, or (c) individuals make the optimal choice locally and we collectively lose something that can't be priced.

Tension

Jim Simons-style quant brilliance produced billions of dollars and zero social value

A pure-extraction business can be simultaneously the best execution of a narrow skill AND a net-zero contribution to the world. Technical brilliance is not moral license.

Tension

US-style democracy critique vs refusing to lecture China

An honest observer can hold that a political system is flawed AND that it's not the observer's business to reform another country's — but that combination is rare in actual US policy discourse.