Don't read articles about Ruby!
I usually don't! This is an article about Ruby and "LISP". I read articles about Lisp. This one is mistaken, I think, mostly because the author hasn't used Lisp to do much, but writes about it anyway.
But I really don't mean to carp about the article. Ruby makes him happy, that's great.
I for one may use Ruby as a scripting language for my next project, I want to see more articles like this.