I'm to the point that I don't speak unless i absolutely have to. Who wants to be corrected or one-upped anytime a statement is made.. Then there are those that will try to mind-f*ck you at every turn.
Besides, if you don't speak then someone can't accuse you of being negative just because you threaten their ego or it's something they don't like. Now I just let them do their own thing and I do mine with the least amount of communication possible between us. I have nothing to offer them and they are of little value to me.