For me, its main value was to inspire a couple of moderately interesting science fiction novels by A.E. Van Vogt, The Players of Null-A and I forgot the other title. I dug how the heroes of these tales got themselves out of dangerous scrapes and beat the bad guys by remembering to adjust their thinking to non-Aristotelian categories. Which is what the cryptic phrase “null-A” of the title refers to.
Robert Anton Wilson, who is a definitely interesting writer, also claims to have embraced GS, and to demonstrate it by writing an essay or two in “E-prime,” which means English without the verb be, without the use of be as a copula to equate two things, because according to GS all mental confusion results from saying that anything “is” something, because no two things are exactly alike, or something like that. So in E-prime you don’t say “A is B.” Only less definite shades of meaning, like “A seems like B to me” or “I find A as B.” But since Wilson hasn’t used E-prime in most of his writings, I’m skeptical about his claim to be a General Semanticist. It’s probably more like one among many new ways of using the brain that he has been experimenting with. I don’t go for GS myself, but the E-prime argument has reminded me to be more careful about assigning entities to categories; after all, that way lies prejudice, thinking that “all Armenians are no good,” to take a random example, or anything that denies the uniqueness of individuals.
I wonder if E-prime was influenced by the grammar of Korzybski’s native language Polish, which does not necessarily use the copula verb byc’. In normal Polish, instead of saying “A is B,” they can simply say “A B,” where the isness of the sentence is implicit.