Hyrum's Law

Hyrum’s Law states,

With a sufficient number of users of an API, it does not matter what you promise in the contract: all observable behaviors of your system will be depended on by somebody.

See Hyrum’s Law for the full observation.

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As an infrastructure or service provider to many people, I use this observation and article to negotiate reasonable changes with customers. If you find customers depend on unreasonable behavior, and are having a difficult time updating your infrastructure or service, consider pointing them at Hyrum’s Law and asking them if they think they’re being reasonable.

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