[kleer001]

Not true. And for several reasons.

There's a reason the US Army won't take recruits with an IQ under 87. At that point they can no longer keep in mind simple instructions and are not worth the training.

Ask any soon-to-be parent if they want a low or high IQ child.

Now, IQ doesn't accurately predict productivity. That's conscientiousness and it's highly predictive and stable over time.