Both come from thinking about an uncertain future, but a black swan is the rare shock nobody saw coming, while the Lindy effect is a rule for guessing what will last — the older something is, the longer it's likely to endure.
| Black swans | The Lindy effect | |
|---|---|---|
| What it is | A rare, unpredictable, high-impact event | A rule: for non-perishable things, age predicts further survival |
| Time horizon | Sudden — a single shock | Gradual — survival tested over years or decades |
| Use | Build in resilience and optionality against the unexpected | Bet on ideas and tools that have already stood the test of time |
A black swan is the disruption you can't predict, so you build slack and optionality to survive it. The Lindy effect is a bet on the opposite kind of thing — something already proven durable, which makes it more likely to keep going. One prepares you for shocks; the other tells you what's least likely to be shocked away.
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