But individual books are access to K. cheap enough to be affordable to many. But news is not very usable for the commoner. Religious ideas are in flux. Who is doing Research being done by many in a non-systematic way. Knowledge in science Science Res.
Research is 'pure' in that it is funded by the participants.
They also support the growing number of Universities, which also contribute to research. The total body of knowledge has expanded. No one man can know all there is to know. Printing demands expertise from the author. A reader might know more than he does.