McLuhan's phrase for the perceptual operation that replaces goal-seeking in an electric environment, and one of the most frequently used terms across the series. Cameron's recurring insistence is that it is a precise technical term rather than the everyday business of noticing patterns — the counterpart, in a field made of physical nature plus human nature, of what chemists learned to do with physical nature after 1800. New to it — start with dialogue 58, where it is defined at length and given its stakes.
Across the dialogues
Hardened from a recurring phrase into a defended technical term with a discipline behind it — Cameron dates its analogue to chemistry after 1800 and gives it the same dual-use stakes as physics, so the series' most-used phrase acquires both a method and a way of destroying the world
The definition that governs every other use in the series — the phrase names a discipline's operation, and reading it as ordinary perceptiveness is the error that keeps McLuhan misunderstood.
"Pattern recognition is a precise technical term referring to something like what chemists began to see in physical nature around 1800."
Bob ranks it inside McLuhan's own sequence of overturnings rather than treating it as a late catchphrase.
"And that was his third Copernican revolution,"
The term is given its dual-use stakes — a method powerful enough to be the key to everything is, by the same token, capable of destroying the world the way physics did, which Cameron says is happening now in slow motion.
"so pattern recognition is the key to everything,"
Used as a live correction rather than a topic — Cameron catches Bob narrating decades in sequence and offers pattern recognition as what McLuhan recommends instead of chronology
The objection lands on the series' own habit — the decade-by-decade story Bob tells is the very frame McLuhan's method is supposed to dissolve.
"Notice how you're using the chronological framework here. So you're talking about earlier and later and when this became that and this sort of stuff."
The alternative stated as a condition, not a technique — treating the phases as simultaneous possibilities is what makes the pattern visible at all.
"If we get away from that notion of time and realize that all of these things are possibilities, then we begin to do what he calls pattern recognition."
Connections
Cameron takes the term as McLuhan's technical coinage, not the ordinary sense of noticing patterns.
What pattern recognition recognizes is the cognitive principle — which is the instant replay.
Its field is physical nature plus human nature — the interior landscape, not anything inside a head.