> However once you learn that sed means stream editor, you won't ever forget it.

I feel like this is approximately the third time I'm learning this.

Don't forget that you need to know English for that to work. I'm pretty sure most Unix users don't speak English (most computer users definitely don't). I interact with people who know few words besides "hello" and "goodbye", and for them "sed" is a nonsense term, just a set of letters randomly thrown together. Same as e.g. Excel, a random token that means nothing.

sed is just an example, of course, the author's point doesn't hold much weight for many (most?) users globally.

That's part of the point, I believe. It's not about being always able to guess the function from first sight. It's also about the function and name serving as mnemonic to each other once you understand how it got named.

Same for grep - with, I guess, the proviso/assumption that you know what regular expression means, which might have been a fair assumption for the sort of people who had command line access to Unix systems in the 70s/80s, but may no longer be valid for developers under 30 who grew up with Windows and were perhaps trained in 6 or 26 week "bootcamps" that didn't have time to cover historical basics like that?

lol no. There are literally a hundred plus Unix tools and commands. I couldn’t tell you what 90% of them mean. I sure as hell couldn’t have told you what sed stood for. And if you asked me tomorrow I also wouldn’t be able to tell you.

C programmers are great. I love C. I wish everything had a beautiful pure C API. But C programmers are strictly banned from naming things. Their naming privileges have been revoked, permanently.