Oh, btw. this is a fun watch if you want to look further into the abyss of Hyrum's Law and how another part of Google has a totally different approach to tackling it compared to the Go/Semver folks: [CppCon 2017: Titus Winters \u201cC++ as a "Live at Head" Language\u201d - YouTube](https://www.youtube.com/watch?v=tISy7EJQPzI) (the first half of the talk is about this without being C++ specific)