Art writer Suzi Gablik is probably best known for her books theorizing a pluralistic and/or socially conscious art, Has Modernism Failed? and The Reenchantment of Art.
Yet before she became poMo she was a Mo. It's still possible to find moldy copies of her 1977 tome Progress in Art, the thesis of which is that conceptualism in the manner of Sol LeWitt represented evolution in art.
A New York Times review from the '70s, archived online, characterized her book thusly:
[C]ritic and artist Suzi Gablik dares to pose the possibility -- sure to be hotly debated in art circles -- that recent art, especially serial, minimal and conceptual art, is the fruition of a millenia‐long development of the human perceptual faculties. This is, to be sure, not a simple task; but Gablik marshals some impressive arguments in favor of her hypothesis that art, like science, follows an evolutionary route from one stage of development to a higher plane of perceptual integration.
By the mid-'80s, annoyed by art world commodification and Julian Schnabel, she stopped talking about progress. It's interesting to skim the earlier book to see how deeply she imbibed that particular sugary drink before switching to one called "reenchantment." As far as I know she never critiqued her earlier ideas a la Wittgenstein, she just didn't mention them any more.