In 10th grade most kids have done a year of algebra and are doing plane geometry along with simple proofs.
That must be it: the scientific sample of people he described the test contents too did not use proofs in their work. Therefore, introducing mathematical logic in 10th grade is not going to prepare students for the high-tech jobs of the future.
From what I've seen from tutoring 3 younger siblings in math throughout their high school days, I think they should spend the first 3 years of high school drilling Algebra into their heads. Then in the last year they can spend half a year on geometry and half a year on trig.
From what I've seen the biggest problems my sibs had with higher math wasn't the higher math, it was the algebra underlying it. They get one year of Algebra in 8th grade and the move on to Geometry assuming they have mastered it, but they havent.
We have quite the conundrum in this country: not enough qualified workers for high tech jobs, and a strong resistance to teaching kids the skills to do those jobs. I think it's going to take a major cultural shift for us to move past this and have parents demanding their kids learn more math and science. There seems to be an incipient movement in this direction but man is there a lot of inertia!
"a strong resistance to teaching kids the skills to do those jobs"
There is a strong resistance from the kids because its either boring, too hard or not explained in a way that is relevant to them to see how it can be applied. This is among the main reasons why in the US the number of SMT college/uni graduates has not increased since 1980, while humanities has more than doubled.
In 10th grade most kids have done a year of algebra and are doing plane geometry along with simple proofs.
That must be it: the scientific sample of people he described the test contents too did not use proofs in their work. Therefore, introducing mathematical logic in 10th grade is not going to prepare students for the high-tech jobs of the future.
Brilliant!