Cognitive Bias on NCW

The Price on Your Screen Is History, Not Value

Mon, 29 Jun 2026 00:00:00 +0000

The number in your brokerage app is the price of the last completed trade. It’s not what you’d pay right now, and it’s certainly not what the company is worth. Three different numbers, one display, and most investing confusion lives in that gap.

Number one: the last transaction
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Nobody sets a stock price. There’s no committee. Price emerges from the order book — a live list of bids (what buyers will pay) and asks (what sellers will accept), updating in milliseconds.

The Number That Makes You Feel Safe Doesn't Exist

Sun, 28 Jun 2026 00:00:00 +0000

You’ve picked a figure that will finally make you feel secure. When you reach it, you will pick a new one. That’s not a failure of discipline — it’s what happens when you outsource a feeling to a number that has no opinion about you.

The threshold moves because it was never about the threshold
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The logic feels airtight. Money buys options, options reduce anxiety, therefore more money means less anxiety. The first two steps are true and the conclusion doesn’t follow.

The Expensive Decisions Are the Ones You Never Made

Tue, 23 Jun 2026 00:00:00 +0000

The costliest financial mistakes in your twenties and thirties aren’t purchases. They’re defaults — the city you stayed in, the job you didn’t leave, the cash you never invested. Nobody decided any of them, which is exactly why they cost so much.

Where you live is a compounding decision
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Geography is among the most consequential and least discussed financial choices. Median household income runs about $69k in Kansas City, $90k in Austin, $135k+ in San Francisco. Cost of living absorbs some of that gap and nowhere near all of it.

The All-Time-High Data Is Right. It's Also All American.

Sun, 21 Jun 2026 00:00:00 +0000

Buying at record highs beats waiting for a dip. The research supports it, and it’s worth acting on. It’s also drawn entirely from one index of one country during that country’s most dominant stretch — which changes what you should buy, not whether you should buy.

The finding, stated fairly
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Three investors: one who refuses to buy at all-time highs and waits for a 10% pullback, one with the worst possible luck who invests annually at the exact peak, and one too nervous to start.

Risk Isn't One Number — It's Four

Sat, 20 Jun 2026 00:00:00 +0000

Every asset gets ranked on one line, safest to riskiest. That line is a lie of compression. Risk has four separate dimensions, and the one that wrecks you is always the one you weren’t measuring.

The single-line ranking hides more than it shows
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You know the ladder. Cash at the bottom. Then government bonds, then investment-grade corporates, then broad index funds, then individual stocks, then options and venture capital at the top. It’s a useful picture and it’s roughly right about ordering.

Price-to-Book Measures What Accountants Can See

Thu, 18 Jun 2026 00:00:00 +0000

Price-to-book compares a company’s market price to what it owns on paper. The catch is that roughly 92% of what modern companies are worth never appears on paper — so for most of the market, the ratio measures the wrong thing entirely.

The mechanics, briefly
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P/B = market price per share ÷ book value per share, where book value per share is (total assets − total debts) ÷ shares outstanding.

Pick Your Holding Period and the Strategy Picks Itself

Tue, 16 Jun 2026 00:00:00 +0000

There are fifteen recognisable investor archetypes and they look like fifteen philosophies. They aren’t. Sort them by how long they hold, and the philosophies collapse into one variable — with the outcomes lined up neatly alongside it.

The taxonomy, sorted by the thing that matters
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Forget the labels for a second and look at the axis underneath them.

Passive Income Is Just Labour You Front-Load

Mon, 15 Jun 2026 00:00:00 +0000

Nothing on any passive income list is passive on day one. You’re buying an income-producing asset with work instead of money — and the only useful way to compare the options is by how long you pay before the payments stop.

Reframe the whole category
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Every stream people call passive has the same structure. You put in effort or capital up front, a system exists at the end, and the system produces money with reduced ongoing input.

Optionality Is the Asset That Compounds in Your Twenties

Sun, 14 Jun 2026 00:00:00 +0000

Most money advice for young people is about restriction — spend less, save more, wait. The advice that actually pays is about the opposite: buying the ability to change your mind later, and refusing anything that locks it.

The common thread nobody names
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Run through the standard list of “things I wish I knew at twenty” and it looks like eight unrelated instructions. Build credit. Don’t over-save. Kill your ego. Quit things.

Every Upgrade Is a One-Way Door

Sun, 07 Jun 2026 00:00:00 +0000

Raising your standard of living is easy and reversing it is brutal. That asymmetry is why people on genuinely good salaries still live paycheque to paycheque — every upgrade was a decision that could only be made once.

The trap is the ratchet, not the purchase
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Lifestyle creep gets described as spending more when you earn more. The damaging part is that it doesn’t go backwards.

EPS Has a Denominator Management Can Move

Sat, 06 Jun 2026 00:00:00 +0000

Earnings per share looks like a fact about a business. It’s a fraction, and companies have spent over a trillion dollars a year buying back shares — which raises EPS without earning an extra cent.

What the number actually says
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EPS = (net income − preferred dividends) ÷ shares outstanding. It answers how much profit each common share earns. Preferred shareholders get paid first at a fixed rate, so their dividends come out before the division.

An All-Time High Is Not a Warning Sign

Thu, 04 Jun 2026 00:00:00 +0000

Buying at a record high feels reckless. The data says it’s slightly better than buying on a random day, and considerably better than waiting for the dip you’re holding out for. The danger you’re sensing is manufactured by your own wiring.

Three investors, and the one who does worst
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Picture three people.

Active vs Passive Is the Wrong Fight

Wed, 03 Jun 2026 00:00:00 +0000

Professional active managers lose to the index. That much is settled. The part nobody puts on the poster: individual investors lose to both — and they do it holding the same funds that beat the professionals.

The settled part, quickly
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Active investing means trying to beat the market: picking stocks, buying actively managed funds, or holding themed active ETFs. Passive means tracking an index and accepting its return.

Every Holding Is There for Math or for Feelings

Wed, 27 May 2026 00:00:00 +0000

Go through your portfolio line by line and ask one question of each holding: is this here because the numbers say so, or because of how it makes me feel? Most portfolios are mostly fine. The damage sits in two or three positions bought for comfort.

Dividend funds are a tax bracket, not a personality
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The single most common feelings-holding in a young portfolio is a dividend ETF. SCHD is the usual suspect, with a following that treats it as a permanent fixture.

Getting It Right Beats Being Right

Wed, 27 May 2026 00:00:00 +0000

You can win an argument and end up with an enemy, which is a bad trade you make instantly and pay for slowly. The skill worth having isn’t out-arguing an aggressive person. It’s coming out of it with your point intact and the relationship still there.

First, make it clear you’re not here to fight
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Once voices rise and people start talking over each other, both sides stop processing anything. Everything after that is noise. So the first job is lowering the temperature, and it’s mostly mechanical:

You're Not Behind — You're Using a Rigged Scorecard

Sun, 10 May 2026 00:00:00 +0000

The feeling of being financially behind is mostly manufactured. It comes from comparing your complete finances against other people’s visible ones, on a scorecard that moves the moment you reach it.

The people setting your benchmark are often financed
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Looking wealthy is cheap and fast. A leased car, a designer bag on a payment plan, a holiday booked before it’s paid for — all of it is available to anyone with a decent credit limit and a tolerance for interest.

You Have to Earn Your Way Down the Risk Spectrum

Thu, 07 May 2026 00:00:00 +0000

Investor archetypes can be lined up from most to least evidence-backed. Almost everyone starts somewhere in the middle of that line, having skipped the part where you justify the move. The spectrum isn’t a menu — it’s a ladder you climb by proving something first.

The order, from strongest evidence to weakest
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Index Fund → Value / GARP / Dividend → Growth → Contrarian → Real Estate → Angel → ESG → Gold → Crypto → Momentum → Options → Day Trader / Quant.

You're Buying for the Man You Used to Be

Wed, 06 May 2026 00:00:00 +0000

Most men replace shoes by buying the same shoe again. The bulky black trainer, the square-toed dress shoe, the heavy brown loafer — twenty years of loyalty to a style that suited a different body and a different wardrobe. Loyalty to an old shoe isn’t timeless taste.

The question before any purchase
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Does this fit the man I am now, or the man I used to be?

They Got Paid Either Way

Mon, 04 May 2026 00:00:00 +0000

Seven of the most expensive purchases people make in their twenties share one feature. In every case, the person selling collected their money whether or not the thing worked. Once you check for that asymmetry, most of these transactions stop being tempting.

The test, stated once
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Before any significant purchase, ask: does this person’s outcome depend on mine?

The Recession Is Announced After It Starts

Fri, 01 May 2026 00:00:00 +0000

By the time a recession is officially declared, the economy has usually been in one for the better part of a year — and the market has often already turned. Every instinct that says “wait for confirmation” is calibrated to information that arrives too late to use.

Who decides, and how long they take
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There’s a rule of thumb — two consecutive quarters of falling GDP — and then there’s the actual process. In the US, the National Bureau of Economic Research’s Business Cycle Dating Committee makes the call, weighing employment, income, industrial production and spending rather than GDP alone.

The $4,000 Is Already Gone

Tue, 21 Apr 2026 00:00:00 +0000

A 25-year-old has put $4,000 into a whole life policy sold to him by a family friend, and wants to know whether to walk away. Wrong question. The $4,000 is spent either way. The only live question is what the next eight years of premiums are for.

Why the product is hard to evaluate on purpose
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A whole life premium splits three ways: the death benefit, the cash value that’s presented to you as an investment, and the commission for whoever sold it. That third slice is why the first two are hard to see.

The Market Is Not the Economy

Tue, 14 Apr 2026 00:00:00 +0000

In February 2020 the market was at record highs. A month later it had fallen 34% in weeks, the fastest crash in history. Twenty-two million Americans lost their jobs in a fortnight — and the market then rose 30% in two months. Nothing was broken. The two things were never measuring the same thing.

One looks backward, one looks forward
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Economic data reports what already happened. Unemployment figures, GDP, inflation — all describe a period that has finished.

The Default Did More Than the Discipline

Mon, 06 Apr 2026 00:00:00 +0000

The biggest driver of whether someone retires comfortably isn’t their salary, their fund picks, or their willpower. It’s whether a form was ticked for them on their first day. Automatic enrolment does more work than every piece of financial advice combined.

The size of the gap
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Vanguard’s data on this is stark. Employees who were automatically enrolled had a 94% participation rate in 2025. Employees who had to sign themselves up: 64%. Thirty percentage points, from a default.

The Tablets Nobody Reviewed

Tue, 24 Mar 2026 00:00:00 +0000

The Tablets Nobody Reviewed
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Taking diphenhydramine daily for three years is associated with a 54% higher risk of dementia than taking the same dose for three months or less. It’s sold over the counter as a sleep aid. Nobody reviews it, because nobody prescribed it.

The problem isn’t the drugs — it’s the absence of a review
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Most medication harm in older people doesn’t come from a dangerous prescription. It comes from a reasonable prescription that was never revisited after the reason for it passed.

The Step Target Is Lower Than You Think

Tue, 17 Mar 2026 00:00:00 +0000

The Step Target Is Lower Than You Think
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In 16,741 older women, the mortality curve flattened at around 7,500 steps a day. The 10,000 figure everyone feels guilty about missing came from a 1960s pedometer’s product name — chosen partly because the Japanese character for 10,000 looks like a person walking.

Where the real numbers sit
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Lee et al. (2019, JAMA Internal Medicine) tracked 16,741 women with a mean age of 72. Two findings matter.

Taste Got Cheap, Insight Didn't

Mon, 16 Mar 2026 00:00:00 +0000

Taste Got Cheap, Insight Didn’t
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We’ve shifted from buying what we need to buying what says something about us. Two things made that possible, and neither was a change in people — supply chains got cheap, and the internet started delivering taste to you whether you looked for it or not.

How it happened
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Global trade platforms made decent goods affordable, so quality stopped being a rich person’s problem. Then Instagram, TikTok and YouTube began handing you things you’d never have gone looking for. Between them, caring about materials and aesthetics became both easy and cheap.

The Two Horses Were Doing a Job

Tue, 10 Mar 2026 00:00:00 +0000

The Levi’s patch shows two horses tearing a pair of trousers apart. That isn’t decoration. In the 1870s many customers couldn’t read, so the claim — riveted, tougher than the cheap ones — had to be made in a picture. It worked. It’s still on your jeans.

Logos used to be arguments
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The good ones solved a specific problem for a specific audience.

Three Lenses, Three Different Questions

Mon, 09 Mar 2026 00:00:00 +0000

Fundamental, technical and macro analysis aren’t three competing answers to one question. They’re answers to three different questions — what is this worth, where is the price going, and what is the whole economy doing — and most arguments about which is “right” are people answering different questions at each other.

What is it worth: fundamental analysis
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The long-term owner’s lens. You’re not buying a ticker, you’re buying a share of a business, which means the job is working out what the business is worth and comparing that to what it costs today.

Your Valuation Is Wrong, So Demand a Discount

Fri, 06 Mar 2026 00:00:00 +0000

Every intrinsic value calculation you will ever do is wrong. That’s not a criticism of the method — it’s the reason the method includes a margin of safety. The discount isn’t caution. It’s an admission built into the arithmetic.

What the number is trying to be
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Buffett’s definition is unglamorous and precise: intrinsic value is the present value of the cash that can be taken out of a business during its remaining life. Three ideas packed into one sentence — all the future cash, when each piece of it arrives, and what that’s worth in today’s money.

Only the Limited Editions Are Investments

Thu, 05 Mar 2026 00:00:00 +0000

People buy a Montblanc telling themselves it’ll hold its value. Mostly it just doesn’t lose much, which is a different thing. The standard Meisterstück drifts up gently. The limited editions are where the actual money moved — and you can’t use those.

The gap, in one pen
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A 1992 Hemingway Writer’s Edition — built on the 149 but styled after its predecessor the 139, coral-orange barrel against dark brown — launched at roughly a tenth of what an unused one goes for now, somewhere in the $3,000 to $4,000 range.

The Fish Oil Evidence Is Messier Than Either Side Admits

Wed, 04 Mar 2026 00:00:00 +0000

The Fish Oil Evidence Is Messier Than Either Side Admits
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Two large randomised trials found standard-dose fish oil didn’t prevent heart attacks or strokes in healthy people. That’s the strongest argument against the capsule — and the popular follow-up claim, that it also causes atrial fibrillation, turns out to apply mainly to doses far above what’s in the bottle.

What the big trials actually found
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Two major randomised controlled trials tested standard-dose omega-3 against placebo — one following around 25,000 generally healthy adults, another around 15,000 people with diabetes. On heart attack, stroke and premature death, neither found meaningful benefit over placebo.

Your Wearable's Deep Sleep Number Is a Guess

Mon, 02 Mar 2026 00:00:00 +0000

Your Wearable’s Deep Sleep Number Is a Guess
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Wear four sleep trackers on the same night and they’ll agree on roughly how long you slept. On deep sleep — the metric people actually agonise over — one can report 47 minutes while another reports 81. Same body, same night, a 76% spread.

What the devices agree on, and what they don’t
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Total sleep duration is the reliable part. Across devices, total time asleep typically lands within about an hour of consensus, and for detecting sleep versus wake, validation studies put sensitivity at 95% or above for all major devices. If you want to know whether you slept six hours or eight, your wearable knows.

The Purchase Is the Cheap Part

Thu, 12 Feb 2026 00:00:00 +0000

Imagine someone gives you a Lamborghini. Free. You now owe five times the insurance, premium fuel, tyres priced like a holiday, servicing at $1,500–2,000 a year, and months of waiting whenever a part fails. The purchase price was the cheap part, and it was zero.

Every luxury has a tail
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That’s the general case. The sticker price is a one-off; what you’re really signing up for is a stream of obligations that shows up monthly, forever, and never appeared in the decision.

One of These Costs More Than the Other Seven

Tue, 10 Feb 2026 00:00:00 +0000

Lists of things to stop buying treat every item as equally guilty. They aren’t. One purchase on the standard list costs more than all the others combined, and it’s the one people defend hardest.

The car is the whole list
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The average new car payment in the US hit $770 a month in the first quarter of 2026, an all-time high. Used runs $531. The average new loan is $43,925 at 6.39%, and used borrowers are paying 11.43%.

Most Blood Pressure Readings Are Wrong

Wed, 04 Feb 2026 00:00:00 +0000

Most Blood Pressure Readings Are Wrong
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A cuff two sizes too small adds nearly 20 mmHg. An unsupported arm adds almost 7. A full bladder adds 10 to 15. Stack a few of those and you have a diagnosis of hypertension manufactured entirely by technique.

Why this matters in both directions
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High blood pressure is the largest single contributor to strokes and heart attacks worldwide, and it produces no symptoms until it produces a catastrophe. That makes measurement genuinely important — and it makes measurement error important too, in both directions.

No Vegetable Unclogs Anything

Tue, 03 Feb 2026 00:00:00 +0000

No Vegetable Unclogs Anything
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Nothing you eat clears an artery the way a plumber clears a drain. But three categories of vegetable, eaten consistently for years, measurably slow arterial ageing, keep existing plaque more stable, and lower blood pressure in controlled trials. That’s a smaller claim and a far better supported one.

Third: cruciferous vegetables
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Broccoli, cauliflower, cabbage, kale, Brussels sprouts. People eating these regularly show less calcification and hardening in artery walls — the kind visible on an X-ray as faint parallel lines tracking a vessel, and conspicuously absent in people with healthy arteries.

You're Paying for the Walk, Not the Room

Sat, 31 Jan 2026 00:00:00 +0000

A deluxe Disney resort room runs around $700 a night. The room is not worth $700. What you’re buying is the short walk to the park gate and a set of perks nobody else is allowed to sell you. That’s a real product. It just isn’t luxury.

The theming is a costume over the same building
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Deluxe and budget resorts sit on much the same frame underneath. The expensive one has better finishes and a much better story. Strip both back and you find the same thing: a mass-accommodation model, run for efficiency.

The Game Changed, Not Ended

Tue, 27 Jan 2026 00:00:00 +0000

The Game Changed, Not Ended
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A lot of young men are grieving a life that ended before they got to it — one income, a house, a pension at sixty. The grief is understandable and the target is odd, because that life had trade-offs nobody mentions and it isn’t coming back either way.

The trap of the dead game
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Most of the doom is a comparison against a specific mid-century arrangement. Measured against that, yes, things look worse.

Self-Respect Comes From Hard Things

Wed, 07 Jan 2026 00:00:00 +0000

Self-Respect Comes From Hard Things
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You can’t buy self-respect, and you can’t rest your way into it. It seems to show up mostly as a byproduct of doing things that were genuinely difficult.

Happy and satisfied aren’t the same feeling
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There’s a useful split here between happiness and satisfaction. Happiness is fairly passive — it doesn’t ask much of you. Satisfaction needs novelty and challenge, and you only really get it from getting good at something you couldn’t do before.

Cognitive Bias on NCW

The Price on Your Screen Is History, Not Value

Number one: the last transaction #

The Number That Makes You Feel Safe Doesn't Exist

The threshold moves because it was never about the threshold #

The Expensive Decisions Are the Ones You Never Made

Where you live is a compounding decision #

The All-Time-High Data Is Right. It's Also All American.

The finding, stated fairly #

Risk Isn't One Number — It's Four

The single-line ranking hides more than it shows #

Price-to-Book Measures What Accountants Can See

The mechanics, briefly #

Pick Your Holding Period and the Strategy Picks Itself

The taxonomy, sorted by the thing that matters #

Passive Income Is Just Labour You Front-Load

Reframe the whole category #

Optionality Is the Asset That Compounds in Your Twenties

The common thread nobody names #

Every Upgrade Is a One-Way Door

The trap is the ratchet, not the purchase #

EPS Has a Denominator Management Can Move

What the number actually says #

An All-Time High Is Not a Warning Sign

Three investors, and the one who does worst #

Active vs Passive Is the Wrong Fight

The settled part, quickly #