Take a moment and compare your response to the other responses here. The other two (at the time of this writing) of them are useful to help someone understand something.

The author wrote up his thoughts as a blog post and took the time to submit it looking for help understanding an issue.

You were unnecessarily rude and condescending in your response. I'm only bringing this up because your account is new. If you're going to take the time to create an account to reply to a post, why would you create an account just to leave this comment?