CONCEPT
Structural Novelty
Hofstadter's term for the creation of new conceptual elements that expand the space of possible thought — the kind of novelty Darwin produced when he reconceived artificial selection as a mechanism rather than a human practice.
Structural novelty is the creation of new concepts, new categories, new ways of parsing the world that expand the space of possible thought beyond what pre-existing elements could generate through any combination. Darwin's perception of natural selection was structural novelty. He did not combine the existing concepts of 'artificial selection' and 'nature' into a new arrangement. He reshaped both concepts — artificial selection became an instance of a mechanism rather than a human practice; nature became an agent of selection rather than a passive backdrop — and the reshaping produced a new conceptual space (evolutionary biology) that could not have been derived from the pre-existing concepts by any combinatorial operation.
In The You On AI Field Guide
The distinction from combinatorial novelty is architectural. Combinatorial novelty operates on fixed representations; structural novelty requires the representations themselves to change. In Hofstadter's framework, this change is precisely what fluid concepts can do and what statistical vectors cannot. The conceptual space