l5-the-black-swan_ltcm-validation

The LTCM collapse showed that Gaussian-based risk models ruled out the large deviations that actually occurred in 1998. According to Taleb, the event was a Black Swan that falsified Modern Portfolio Theory's assumptions, yet the models continued to be taught and used.

Taleb argues that contagion, not validity, determines the fate of theories in social science. Despite the spectacular losses, MBAs continued learning portfolio theory, pension consultants kept using the same tools, and the option formula retained the Black-Scholes-Merton name.

The Skill is grounded in explicit passages from Taleb's The Black Swan (chapter seventeen, on Locke's madmen and bell curves) and Fooled by Randomness (chapter thirteen), as recorded in its source references.

It is Taleb's observation that wrong ideas inside institutions survive even direct empirical refutation. The LTCM episode taught him that institutional inertia and social contagion protect failed theories more robustly than evidence can attack them.

Use it when you need Taleb's specific first-person interpretation of the LTCM event and its epistemological lessons, rather than neutral historical accounts or quantitative post-mortems of the fund's positions.