sentences: ; Orality gave us the stepping stones that allowed us to get where we are today, it was a necessity for the growth of civilization.But using his own examples to amplify Ong's thought, McLuhan shows how each stage in the development of this technology throughout the history of communication – from the invention of speech (primary orality), to pictograms, to the phonetic alphabet, to typography, to the electronic communications of today – restructures human consciousness, profoundly changing not only the frontiers of human possibility, but even the frontiers it is possible for humans to imagine.