The Billion-Dollar Mistake and Other Software Horror Stories

Intriguing Stories in Computer Science

The Billion-Dollar Mistake and Other Software Horror Stories

A curated list of intriguing stories from computer science history, from catastrophic bugs like the Ariane 5 explosion and the Therac-25 radiation overdoses to legendary design philosophies like Unix pipes and Erlang's 'let it crash'. The author, reflecting on age, shares both cautionary tales and enduring principles that shaped software development.

Tony Hoare’s “billion-dollar mistake” — inventing the null reference.

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2026-08-17