AntifragilityBlack SwanPrinciple

Positive asymmetry (convexity)

Положительная асимметрия · Асимметрия риска · Convexity bias · Асиметрія

Shape your bets so the downside is small and the upside is large. The asymmetry - not the probability - is what generates positive long-run results.

Plain explanation

Forget «what's the probability?». Ask «what's the magnitude of each outcome?». A 30%-probability bet with 1× downside and 100× upside is wildly better than a 70%-probability bet with 5× downside and 2× upside.

Why it matters

Probability thinking dominates Mediocristan. Magnitude thinking wins in Extremistan. Asymmetry is the bridge.

Practical example

Buying lottery tickets is bad asymmetry (capped upside, near-certain loss). Buying a call option with very limited cost on a low-probability event is good asymmetry.

How to use

1Always sketch both tails. Refuse bets where the bad tail is unbounded.

Related concepts

Black SwanAntifragility

OptionalityThe asymmetric right (not obligation) to take advantage of good outcomes without being trapped by bad ones.

Black SwanAntifragility

Barbell strategyCombine extremely safe positions with extremely risky ones. Avoid the «moderate» middle, which has thin-tail-thinking risk you can't see.

Black SwanAntifragility

RuinThe class of outcomes from which you cannot recover. Ruin doesn't average out, doesn't get reversed by a winning streak, and ends the game.

Black SwanAntifragility

ExposureThe shape of what happens to you under different outcomes - not the probability of those outcomes. Manage exposure, not forecast.

Original books

This part of the knowledge base is inspired by the book. Go to the Ukrainian edition to explore the concept in depth.

Buy «Чорний лебідь»Buy «Антикрихкість»

Source notes

· Антихрупкость - асимметрия / convexity