[sunir]

Since it is empirically obvious that 200 years ago the world was not entirely populated by illiterate peasants ...perhaps your population model of the distribution of IQ and causes thereof is inaccurate.

[vilmosi]

Not entirely but the vast majority. It's empirically obvious writting existed 200 years ago therefore someone somewhere knew how to write.

What do you think people did before the industrial revolution?

[sunir]

A lot.