Weird Cluster Hypothesis

A new essay on LessWrong explores the Weird Cluster Hypothesis—the idea that unusual or extreme traits tend to cluster together rather than appearing in isolation. If you observe one extreme trait, others are likely nearby. Take psychology: ADHD, autism, anxiety, depression, and OCD all correlate more strongly than random chance would suggest, hinting at some underlying dimension. In financial markets, extreme price movements in one asset often predict extreme movements elsewhere during a crisis. According to the essay, this pattern is common enough that researchers could use it to identify whether a trait is truly 'weird'—transforming a vague descriptor into a measurable signal with real predictive power.

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