I've read the book and I found it very fascinating and kind of playful, which actually makes learning the Janet program language much more fun. However, I found the documentation of the language lacking in many ways. Oftentimes there are functions or commands that are just there, but there's no example or explanation. or explanation as to what they do. In fact, there are a lot of those that I found in the book, but I couldn't find in the documentation. So this is one of the reasons I stopped learning Janet, even though I really like the idea of this language, and the fact that it has many sane defaults and similarities to mainstream languages instead of like adhering to archaic Lisp conventions. At the end of the day, it's not actually a LISP because it's not cons lists. And it is fine by me, but again, I found the language not fully documented.