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Is failure correlation higher in stress tests or real‑world events? Failure correlation is typically higher and more pronounced during real-world events than in controlled stress tests. Stress tests are designed to probe known failure modes under extreme but predictable loads, such as high transaction volume or network latency. While they can reveal some correlated behaviors under duress, they often miss the complex, emergent, and "black swan" interactions that define real-world crises. A real-world event—like a novel crypto-economic exploit, a sudden cloud provider outage, or a zero-day vulnerability in a common library—introduces unanticipated variables and chain reactions that stress tests cannot fully replicate. The chaotic and interconnected nature of live systems means that hidden dependencies and correlated failure modes only become apparent under genuine, unscripted stress, making the correlation observed in production both more severe and more unpredictable.

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