It’s worse than that. I work in a pretty rarified world. Lots of really smart people. But even though I can point to a host of really smart people whom I *know* are smart - the idiot sitting in the office next to them with the same responsibilities wouldn’t have a job flipping burgers if I was the one making the call.
There’s more of the second kind.
Now imagine, if you will, half of those working to build AI engines are from the “below average” group...