I think it has to do with who is reading. Some people learn better this way (myself included). I've seen many topics over the years explained in forms similar t

I think it has to do with who is reading. Some people learn better this way (myself included). I've seen many topics over the years explained in forms similar to this and it was very easy to understand opposed to just reading it out of a textbook. Although I'll admit that even this was done way too cutesy. They put far too many pictures with too small of text on each page, made it hard to follow along and keep focused. I need to be able to read fluently, small white text on a black background is hard on the eyes. You can find little snippets like this in many textbooks, but it's generally a single picture or two that are shown to better show the point made in the preceding text.