Why does diderot believe that knowledge should be collected and shared among all people?

Diderot believed knowledge should be collected and shared among all people because " knowledge is power , it helps to improve oneself ". If it is not collected and shared among people ,people will remain ignorant.Ignorance leads to disaster and it is danger to ordinary people.This answer is correct because it explains the benefits of knowledge and what happens without it

Answer is mass marketing.

Idon’t know who knows but i know who does not know me