Sentence:  The point of criticism under scrutiny squares with a possible reading of Roy Harris (e.g. 1996); every attempt to posit an abstract language amounts to <WSD>'segregationalism</WSD>', isolating verbal language from other phenomena with which it may turn out to have essential links. 
Meaning of the word marked with <WSD> tags:  The stance that linguistic signs act (or approach acting) as fixed codes with invariant pairings of form and meaning.