CONCEPT
Recoding (Miller)
The deliberate, error-driven transformation of unfamiliar information into familiar
chunks — the process Miller identified as the engine of expertise, and the process that may or may not survive the
AI compression of implementation work.
Recoding was the most important word in
George Miller's vocabulary. Chunking described the structure of expertise; recoding described the process by which that structure is built. Miller defined recoding as the deliberate transformation of information from a detailed, explicit, cognitively expensive format into a compressed, abstract, cheap one. The process sounds mechanical but is anything but. Recoding is effortful, often painful, and error-driven. The medical student who has memorized two hundred diseases begins to see patterns — clusters of symptoms that co-occur so reliably that each cluster becomes a single chunk. The student did not decide to build these patterns. They emerged through hundreds of encounters with patients, textbooks, and mistakes. Each mistake was a recoding opportunity: a moment when the existing chunking structure failed to predict reality and had to be revised. The chess master's chunks were built across thousands of games. The experienced programmer's design-pattern vocabulary was assembled across thousands of debugging sessions. Recoding cannot be skipped. It cannot