my question was simple, can u comprehend aatma without using your brain ? since vedic sutra says they are two different things, a person in coma can type to answer too right?. forget that and lets say aatma exist sexless casteless as you said but aatma also has will, desire, activity and character so how can you claim it doesn't have desire to discriminate?. In old time, kings and noblemen divided people into categories that existed in time according to their type of works. since bramin was close word to being brahma some clever aryan sect saw this an opportunity to claim that they reached brahma level , called themselves as brahmin (pundit) and belittle fellow aryans who were doing dirty work to gain richness and empower over them. aatma was a vehicle to establish caste system if not the source eh?