# How Complex Systems Fail by Richard Cook

10 Hacker News commenters recommended How Complex Systems Fail by Richard Cook and 0 criticized it, November 2025 to November 2026. It was recommended in 5 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** Recommended as a foundational short essay on why complex systems fail, arguing that root-cause attribution after accidents is misleading. No criticism was recorded.

## Why people recommend it

- Foundational standard for understanding system failure (3 comments): "this document is fundamental to our industry and understanding complex systems" ([source](https://news.ycombinator.com/item?id=49411819)) "This document by Dr. Cook remains _the standard_ for systems failure." ([source](https://news.ycombinator.com/item?id=45979888)) "One of the great documents of our civilisation" ([source](https://news.ycombinator.com/item?id=49410831))
- Read and reread as a classic (2 comments): "drilled Richard Cook's "How Complex Systems Fail" deep into my brain" ([source](https://news.ycombinator.com/item?id=45974714)) "I'm still a fan of the classic" ([source](https://news.ycombinator.com/item?id=49831524))
- Hard to grasp without real failures (2 comments): "it's hard to appreciate it until you've had extended experience with complex systems actually failing" ([source](https://news.ycombinator.com/item?id=49410581)) "Post-accident attribution to a 'root cause' is fundamentally wrong." ([source](https://news.ycombinator.com/item?id=46062753))

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- [Meditations on Moloch by Scott Alexander](https://hackerapproved.com/p/meditations-on-moloch.md): 11 recommend

## Cite as

Hacker Approved, "How Complex Systems Fail by Richard Cook", https://hackerapproved.com/p/how-complex-systems-fail/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).