Can you explain Gertrude Stein's narrative style in "The Making of Americans"?

Works such as The Making of Americans and Three Lives contain long pages in which each sentence is a light variation on some core phrase with great repetition of words even within a single sentence. Stein termed this phenomenon "insistence" rather than repetition. Stein's style is the pronounced repetition of words, phrases, and sentences, with no change or with only incremental progressions of sounds or ociations. Repetition is perhaps the central aspect of what has been called Stein's "cinema style