The completeness of this failure is clear evidence for design, not ineptitude.
This is very much intentional.
Slaves are best managed when uneducated and illiterate.
I was just about to write the same thing.
All this “failure” we see around us is not “failure” at all.
It is intentional.
“Slaves are best managed when uneducated and illiterate.”
Worked in the Middle Ages and for the Catholic Church.