In general, programming languages will change over time, so what matters to me is how that change is managed. Cautious, small, gradual changes over time seem sa

In general, programming languages will change over time, so what matters to me is how that change is managed. Cautious, small, gradual changes over time seem safer than big releases every year or so, but particulary because of Rust's approach to stability. When Rust has a new feature implemented, it does not immediately become part of the stable language. Instead, Rust only commits to stability for a feature once it has been properly tested. It's something I think PHP (which I have been a significant contributor to) and other languages could learn from, because there's no substitute for real-world experience to decide if there are remaining rough edges on feature, or whether it is good idea at all. Moreover, unlike some other languages, Rust has chosen not to force people to adapt their code to new syntax and features! They can stay on an old version (edition) of the language forever, yet still use an up-to-date toolchain and have others be able to make use of their code. I wish every language was like that. Imagine if Python 2/3 had never happened.