I found the post interesting, that's why I submitted HN. I can't be blamed for other people upvoting it. I didn't notice the errors but having people at HN sho

I found the post interesting, that's why I submitted HN. I can't be blamed for other people upvoting it. I didn't notice the errors but having people at HN showing me what is wrong helped me learn more about Haskell. I hope that pointing those errors helps make the post more robust, too.