This has to be the nicest, most reasonable-sounding ad hominem argument I&#x27;ve ever seen.<p>But it&#x27;s still an ad hominem argument.  Is there any way you actually disagree with the post?  What would you say to Dr. Hsu if he were in the room?<p>Also, what is your evidence that he&#x27;s not in touch with experts in psychometrics and human genomics?  I don&#x27;t know him, but I have very much the contrary impression.