[apd_]

If you're not into selfies, you may ignore the fact that your smartphone has a front facing camera. It may not be for you, but other people do use it.

HN is a tech community, which means there're many programmers here. Some people may use X and also contribute to X, or at least want to dig into the source code.

For example, since I'm a Rust programmer and not an R programmer, I'm more interested in "A fast query engine written in Rust" than "A fast query engine written in R". There're benefits of using a program written in a language you're familiar with. One of them is when you find a bug you can dig into the source code, post an issue which point out which code might cause the bug, better yet post a PR. Instead of "Please help, X failed to do Y."