Hacker News Disease
The curious thing is, this post is an instance of what it complains about.  Matt is not so far as I know a formally trained psychologist.  So to the extent he's right, he disproves his own argument.The truth is, while intelligence isn't knowledge, it can be rapidly converted into it.  In fact that would do fairly well as a definition of intelligence.And in any case, credentials aren't knowledge either.  Ultimately you have to judge any argument by what it says, not who said it.