[Cthulhu_]

> You can tell the author has built a lot with Go

That was the funny part from the intro of the article - the author had not, in fact, build a lot with Go at the time.

But, it proves you don't actually need to in order to become knowledgeable about a subject and / or write a book.

[Suppafly]

>the author had not, in fact, build a lot with Go at the time

So many programming books are like that, and usually it shows.