As an emerging writer and writer, I came across this phrase in yet another novel-is-dead kind of article in a New York Times article. The author refers to literary critics as the “possessors of Gutenberg minds”. I’m wondering if anyone else has heard of this phrase, and what it may mean?

The author references Marshall McLuhan as it’s source, so it seems to come from that man’s philosophy, which deals with the effects of mass media and communications in the 50’s and 60’s.