answer:My opinion is that the complexity is not unneeded. (How’d you like that? A double negative—unneeded complexity perhaps?). I think that what people might put forward as unneeded complexity actually allows for subtle shadings of meaning. Or, in the case of conjugating verbs, it provides redundancy that helps people understand meaning. Sure, in writing, it might not be necessary, but most communication is in the form of speech, and we often miss words due to all kinds of reasons. Having multiple redundancy in our speech, such as saying “he is” or “you are” instead of “he is” or “you is” helps us hear the subject of the sentence even if we missed one or more words. In the case of double negatives, that adds a certain color to phrases. In some cases it calls attention to the negation, and in other cases it action isn’t a negation at all. Confusing, and probably deliberately so.