Just came back to this thread.
Without quoting, I agree with Zogler wholeheartedly. You bothered to add scientific research to back your claims. I didn't see much of a need to do that because of the moral implications and psychological implications of a test that screams "Idealized Supremacy." Either way, the truth about I.Q. tests has been exposed.
The ability to see logical rules and intuit the next step is invaluable.
Only if it allows you to DO something.
If you just see rules and next steps and then sit there on your ass like a beached whale, then all that genius ain't worth much.
Externally verifiable results are what is important. Those require action of some sort.
Murrraaaakiiiii, you know full well that most logical discoveries are useless until a relevant and equally useless logical discovery is made.
Leonardo Da Vinci or one of the other guys from that era used to cut up up cadavers and draw hearts and knew how the circulatory system worked. However, it wasn't until the 20th century when an equally useless discovery of penicillin (not really just good bacteria) and ventilators were made that knowing the circulatory system meant something life saving, such as the first open heart surgery.
Edit: So, I would contend that logical discoveries are useful. Kurt Goedel did wonders for math as a logician. Math has done wonders for society. Although, I would contend that society might be better if we actually internalized techniques of knowledge like the Egyptians rather than externalize them like the past 400 years of western society.