There still isn&#x27;t much there, and some of it is just unfounded.<p>For example, while the author claims there are &#x27;crazy levels of duck typing&#x27; in Ruby &#x2F; Rails he provides no such evidence of it and as noted by recent work from Aaron Patterson the vast majority of calls sites even in a very large rails app are actually monomorhpic (<a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=6Dkjus07d9Y" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=6Dkjus07d9Y</a>).<p>But more important than this cherry picked example is the complete lack of this type of technical discussion, which is why I find the post very shallow.