Hadn't heard of Hyrum's law before. https://www.hyrumslaw.com/ https://www.hyrumslaw.com/ With a sufficient number of users of an API, it does not matter w

Hadn't heard of Hyrum's law before. https://www.hyrumslaw.com/ https://www.hyrumslaw.com/ 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. (There's something about the way people manage to phrase these that I really enjoy. Something about the succinct and clear expression of an idea that's otherwise really fuzzy in my head.) It's interesting to think about the implementation being necessarily coupled with the interface. In some context that's obvious, but the idea that another implementation can't be freely swapped in -- because nuanced behavior (sometimes called a bug) in the original implementation is still expected -- is one I hadn't, as such, thought much about before.