switching to modern situation. A Rav who works for a yeshiva that takes in boys who have problems in “top” yeshivos writes a number of great articles about how to deal with kids as people, nurture them, quoting a lot of roshei Yeshivos, etc. Wonderful approach and writing. I think, he undersells himself, as same approach should also be applied to “top” students.
So, he spends several articles arguing that yeshivos should not be evaluated (including by parents who decide, or not, to send kids there) by quality of students at the beginning or even at the end – but by improvement they make at the end over the initial condition, and improvement includes middos and learning ability, not just amount of memorized material.
Wonderful. Now, it happens that there is academic work on measuring school and teacher quality using exactly this method – relative improvement over initial stage. I do not recall details, but there were lots of details learned from this. Of course, secular educators in general do not care for this. Now, does this Rav know about such research? Maybe no, or maybe yes, but he does not see any use in bringing it xto his yeshivish readers.
So, he goes around using his heimishe version of this scientific approach without any contact with the existing literature. Would he go further if he were to read about existing work? Maybe, he would go further and actually measure that improvement .. I don’t know. But clearly even great Rabonim might be disconnected from the existing chochmah.