 [...] The technology and social effects of typography incline us to abstain from noting interplay and, as it were, "formal" causality, both in our inner and external lives.Print exists by virtue of the static separation of functions and fosters a mentality that gradually resists any but a separative and compartmentalizing or specialist outlook.The main concept of McLuhan's argument (later elaborated upon in "The Medium is the Massage") is that new technologies (like alphabets, printing presses, and even speech itself) exert a gravitational effect on cognition, which in turn affects social organization