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Survivorship Bias

History: The Past and the Account of It Are Different Things

July 25, 2026·8 min read

Every account is assembled from what survived, by someone who already knows the ending. That single fact makes events look more inevitable than they were — and explains why careful history sounds less certain.

The Fermi Paradox: A Very Large, Very Quiet Universe

July 25, 2026·9 min read

Billions of stars, billions of years, and enough time for anyone to have crossed the galaxy several times over. We see nothing — and every explanation for that says something significant.

Longevity and Health: The Big Effects Are the Ones Nobody Sells

July 25, 2026·9 min read

The interventions with the largest effects have been known for decades and are unglamorous. Attention flows almost inversely to effect size, for a simple reason — the big ones cannot be sold.

Personal Finance: The Boring Part Is the Part That Works

July 25, 2026·8 min read

Most attention goes to choosing investments — the part you control least and that matters least. Saving rate, time, and costs decide the outcome, and all three are dull.

The Base Rate Fallacy: Start With How Common It Is

July 25, 2026·9 min read

The quiet, bookish stranger sounds like a librarian. There are a hundred times more salespeople — so the shy ones alone outnumber every librarian in the country.

The Pareto Principle: Your Effort and Your Results Are Not the Same Shape

July 25, 2026·9 min read

A few pea pods produced most of Pareto's peas. The lopsidedness he kept finding everywhere contradicts a default we apply constantly — treating twenty tasks as twenty roughly equal things.

Loss Aversion: Why ₹1,000 Lost Hurts More Than ₹1,000 Gained

July 24, 2026·9 min read

A fair coin flip for equal stakes feels like a bad bet to almost everyone. The asymmetry behind that instinct quietly governs pricing, negotiation, investing, and why reform is so hard.

Survivorship Bias: The Bullet Holes That Weren't There

July 24, 2026·10 min read

Wartime analysts mapped damage on returning bombers and proposed armouring the places full of holes. A statistician pointed out those were the survivable hits — and inverted the entire dataset.

Black Swan Events: The Model Was Never the Problem

July 24, 2026·9 min read

Every observed swan was white until Australia. No amount of confirming evidence establishes a universal rule — and the most confident moment is often the one just before the record breaks.

Confirmation Bias: Why Research Can Make You More Wrong

July 24, 2026·10 min read

When evidence agrees with us we ask what it shows. When it disagrees we ask what's wrong with it. Apply that second question to one side only and you can dismantle half the evidence without noticing.

Regression to the Mean: The Jinx That Is Just Arithmetic

July 24, 2026·9 min read

Praise a great performance and the next is worse; criticise a bad one and the next improves. A flight instructor learned this lesson over years of observation — and it was never about motivation.

Startups: Most Advice Comes From the People It Worked For

July 24, 2026·9 min read

Persistence and bold bets describe the founders who succeeded — and just as many who didn't, and aren't being interviewed. A structural view of these companies is more useful than the folklore.

Venture Capital: The Maths Only Works With Outliers

July 24, 2026·9 min read

Most investments return little; one or two return the entire fund. Every practice in the industry that looks strange from outside is a rational response to that distribution.