The Black Swan: The Impact of the Highly Improbable · chapter 4 · id the-black-swan-c4-07-silent-evidence-distorts-our-u

“Silent evidence distorts our understanding of history: we study successful civilizations, companies, and individuals while the failures leave no trace, creating a systematically biased picture of what strategies work.”

holdsconfidence: high⚠ extracted by pipeline, re-audit pending

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Wikipedia: Survivorship Biassource alive

Survivorship bias is the logical error of concentrating on entities that passed a selection process while overlooking those that did not, typically because of their lack of visibility. This can lead to overly optimistic beliefs.

S&P SPIVA Scorecardpaywalled — manual check queued

SPIVA accounts for the entire opportunity set -- not just the survivors -- thereby eliminating survivorship bias. Many performance databases do not make this adjustment, systematically excluding worst performers.

Brilliant: Survivorship Biassource alive

The graveyard of failed businesses, extinct species, and lost civilizations contains far more data than the survivors, but this data is systematically invisible to observers who only study what persists.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.