One line of code on the whole page, and the syntax is wrong. (Need quotes on "hi computer") But besides that, I think this has the potential to be great... but

One line of code on the whole page, and the syntax is wrong. (Need quotes on "hi computer") But besides that, I think this has the potential to be great... but I honestly didn't get much from the video about the content of the book. It's a story, and it's about Ruby. How? What does it teach? How does it encourage kids to interact with technology, or program computers, or whatever the goal is? All I saw were a bunch of pretty pictures and a promise that kids will learn something.