While I admire the author's intentions, this is completely the wrong approach. There are multiple reasons why having actual human tutors is important:
0. The creation of a deep, long-lasting relationship between tutor and tutee
1. The benefits to the tutee: the feeling of pride in helping the younger generation, building empathy and understanding of what the younger generation is doing
2. The tutee is inspired to pass along their knowledge to others later in life; they learn how to tutor by being tutored, thus continuing the cycle
That last point is important. Even if a perfect Primer were created, how would it improve with time? If it truly replaced tutoring, then the art of tutoring would be lost forever, and it'd be up to software engineers to determine the metrics by which to measure the success of the Primer's tutoring algorithm.
Of course, that would never happen. Instead, tutoring by Primer would be reserved for poor people who didn't have tutors in their lives--or who had potential tutors who were scared off by the notion that they were not as effective the Primer. Then, in those communities, organic tutoring--an institution that has existed since literally the beginning of humanity--would be amputated and replaced by whatever tutoring the Primer's developers saw fit.
Real tutoring would, of course, be preserved for the ruling elite. Which I think is what happens in the book, come to think of it.
Of course I could be completely wrong. But this is the peril of MOOCs in general: students who go to first-tier schools like Harvard and Oxford get personalized instruction, while everyone else gets video lectures while glorified TAs proctor exams.[0]
0. https://www.chronicle.com/article/Why-Professors-at-San-Jose...
'Professors in the philosophy department at San Jose State University are refusing to teach a philosophy course developed by edX, saying they do not want to enable what they see as a push to "replace professors, dismantle departments, and provide a diminished education for students in public universities."'