Gutenberg brings us print.

Date, in proposed Anno Hominis : 
201449/12/31 A.H.

The printing press was an important step towards sharing, and thus, the democratization of knowledge. Within 50 or 60 years of the invention of the printing press, the entire classical canon had been reprinted and widely promulgated throughout Europe.

Now that more people had access to knowledge both new and old, more people could discuss these works.