Wikipedia and Google delude many into thinking all human knowledge has been made available to our immediate access.
This is a dangerous lie.
Any scholar will tell you of the vast amount of documents and artifacts completely unavailble online, or indeed impossible to easily scan or study online.
And this silent wealth pales before the oral and analog culture which, in a McLuhanian dimension, can not be simply digitized and maintain integrity.
That's a hugely important caveat, thank you.
Database access is insanely restricted. Being poor and outside academia restricts us to lowbrow digest version of periodicals, for instance.
And there are enormous language barriers... Infotech price points... Backwards compatibility horizons... It goes on and on.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko