CONCEPT
The Rear-View Mirror
McLuhan's diagnostic for the structural tendency to understand new media through the categories of the media they replace — driving into the future while looking backward.
The first television shows were filmed radio programs. The first websites were digital brochures. The first movies were filmed stage plays. In each case, the new medium was understood, used, and evaluated through categories borrowed from the medium it replaced. This is not a failure of intelligence but a structural feature of cognition: the mind has no category for what is genuinely new and can only assimilate the new by mapping it onto something known. You On AI's metaphors for AI — tool, partner, collaborator, amplifier — are rear-view mirrors. Each captures something real about the experience. Each fails to capture the whole. The work of media theory is to notice when we are looking backward and turn, however imperfectly, toward the windshield.
In The You On AI Field Guide
The amplifier metaphor is the most revealing rear-view mirror in Segal's book. An amplifier is a device from sound reproduction — it makes signals louder without changing their character. But a medium reshapes what passes through