What Is the Lindy Effect? (Taleb Definition)
The Lindy Effect is the observation that for non-perishable things — ideas, books, technologies, cultural practices, institutions — life expectancy increases with age.
A book in print for 100 years will, on average, remain in print for another 100 years. A book published last month has roughly a month before it's statistically likely to be forgotten. The older the non-perishable thing, the longer it's likely to last.
Named after Lindy's deli in New York (where comedians observed that a comedian's remaining career length correlated with how long they'd already been working), the effect was popularized by Nassim Taleb in Skin in the Game and his broader Incerto series.
The mechanism:
Non-perishable things face continuous exposure to stressors that could destroy them: competing ideas, changing conditions, technological obsolescence, social shifts. What survives has demonstrated robustness to these stressors. The survival is evidence. A 2,000-year-old ethical principle has survived philosophical challenges, political changes, and cultural upheaval across dozens of generations. A principle proposed last year has survived an academic review.
Practical applications:
- Old books, recipes, and practices are more Lindy-compatible than new ones
- Technologies with long track records are more reliable than untested new ones
- Traditional dietary patterns are more robust than newly proposed nutritional regimes
- Folk wisdom that has survived generations carries more evidence than a recent study
The Lindy Effect is compatible with skin in the game: what has survived under real conditions, with real stakes, carries more information than what has been proposed from safety.
For the full breakdown, read The Lindy Effect Explained.
The hedge idea is itself Lindy: pairing positions to profit either way dates to Alfred Winslow Jones's 1949 hedged fund and has survived every market condition since.