Collective memory has moved from a manual to a technological concept

Little more than a century after the advent of sound recording and the motion picture, and after less than a century of broadcasting, these technologies have come to dominate communication, art and the recording of history. The cataclysmic changes of the 20th century – wars, political transformation, space exploration, the global village – have not only been recorded, transmitted and shaped by them: they could not have happened without them. Collective memory has moved from a manual to a technological concept. The audiovisual media intrude everywhere: every moment introduces the elsewhere and the world-wide into the home…this permanent intrusion…of the other, of the stranger, of that which is far away, of the other language.

from Audiovisual Archiving: Philosophy and Principles by Ray Edmondson