Radio affects most intimately, person-to-person, offering a world of unspoken communication between writer-speaker and the listener.
Marshall McLuhan[Cameras] tend to turn people into things and the photograph extends and multiplies the human image to the proportions of mass-produced merchandise and, [in the age of photography] the world itself becomes a sort of museum of objects that have been encountered before in some other museum and to say that the camera cannot lie is merely to underline the multiple deceits that are now practiced in its name.
Marshall McLuhan