It's Taleb. I've got better things to do than debunk him given how he's obviously become a crank.

As for IQ in general, anyone with a bit of sense can see how obviously some people are just smarter than others, and how children tend to be similarly intelligent as their parents. Intelligence in general is _obviously_ a genetic trait: humans have it in ways animals _clearly_ do not, and different animals _clearly_ have it in different degrees.

As I said, you have to actively fool yourself to convince yourself otherwise; the burden of proof is not on my views here. The only reason there is an IQ denial movement is because IQ (especially the inherited component of it) is so utterly toxic to DEI beliefs.