I like the didactic approach of this article, modifying a commonly known imperative language (Java) step by step to become a functional language, translating th

I like the didactic approach of this article, modifying a commonly known imperative language (Java) step by step to become a functional language, translating the usual imperative idioms to their functional style counterparts. However, the introduction is too long. It is supposedly meant to encourage the reader to keep up reading, but since the introduction is mostly off-topic, I think it actually discourages the casual reader from reading more. Also, the example code isn't indented properly, making in unnecessarily hard to read. Maybe this is a bug in the blog software?