George do you want to say, that all SC/ST are dumb and upper caste people are indigenous? If yes, then you are in sain. It is upper caste people, who spread castism and politics in Govt org. Their aim is to suppress SC/ST people. In this process they forget what they suppose to do in org, they forget why they are hired for. This brings the org like DRDO down. From generations, people like you filled with hatred and pre-eminence dragging India back. Stop thinking about reservation and do your job, India will be better place to live.