Cool, I didn't know about this book! I enjoyed Think Python, but this book surprises me. I'd think there are very few people learning Perl / Raku as their first language nowadays, so a book targeting more experienced programmers seems like it would make a lot more sense.

At one point I started writing a book about Raku for Perl programmers.

For various reasons, I did not finish that: but what did got written, wound up as a 24-part blog series on dev.to: https://dev.to/lizmat/series/24075

What do you mean that TPe3 is "dumbed down"? I didn't notice anything appreciably reduced in the content yet but then again I haven't gone through and compared both editions, so I was interested in your comment.

Okay, apparently he re-wrote some of the problems and did some prose edits. I'm still not sure why that makes the new edition "dumbed down."