FWIW, I find the classic texts of certain fields much more intelligible than the intellectually shoddy 56th iteration of some overpriced glossy Pearson textbook. Compare a typical chemistry textbook with something like Pauling's "General Chemistry" which you can get from Dover, modulo any dated information. You will walk away with a far more solid grasp of the basic principles.

A lot of the failure of learning is a failure of teaching. Incompetent teachers throw disconnected information at you instead of trying to explain or lead you to an understanding of what something is about. I attribute part of this to a loss of solid philosophical coursework where you are taught to think from first principles, taught within a larger integral context, and taught to reason clearly. It used to be the case that everyone with a college degree had at least some basic philosophy under their belts (compare a Heisenberg to a Feynman to a Krauss; the progression is clear). And don't forget the success of the trivium and quadrivium or some variation of them that was often presupposed and prepared students for intellectual work.

I don't disagree with anything you're saying, really; education has been broken by things like too strong an emphasis on test scores, credentials, etc. This not only produces students who don't know how to learn properly, but those students then go on to become teachers who can't learn how to teach properly.

That said, teaching is hard. I don't fully blame teachers who cannot effectively convey subjects to 30 kids, especially these days. Even in an ideal situation, there's so much variance in how people learn best, that it would be hard to blame it on incompetence if a teacher cannot reach every one of their students.

Considering how hard it's going to be to fix the bigger problems with society* - obsession with credentials, lack of funding, better paying, less stressful jobs means less teachers, etc, etc - shouldn't we embrace tools that help kids learn things in a more accessible way to them? As I said, I don't think TFA is it, and we should obviously be aware of the issues, but surely people on HN of all places can see the value in tailoring subjects and lessons to a student's preferred method of learning?

* This is not to say we shouldn't also try to solve those problems