Well if it's too local it kinda begs the question of whether it's one brain or multiple brains loosely linked together just as in your example it's not clear if

Well if it's too local it kinda begs the question of whether it's one brain or multiple brains loosely linked together just as in your example it's not clear if the human society as a whole is a planet scale intelligence or a bunch of human scale intelligences bundled together. a galaxy size brain would disagree with itself a lot. My skull size brain is alreayd disagreeing with itself plenty.