i think still u r in Stone Age only. without knowing the facts just for the sake of writing u wrote something. if u want to know abt the cast system go thru some Books and if u don't have time for the same then let me tell u one MAHABHARATHA. In that book got to VanParva. in that Ved Vyasa has said clearly " Janmani Jayate Sudra, Karmana Duwjotsatey", that means by birth all r sudras, it is there profession which desides abt there casts. i m not telling that what u wrote is wrong or something like that. but before writing anything u just think once abt it's contents. and grew up man. u r in 21st century, still talking abt 16th century. and to b very frank with u don't u think tht in our body itself all these 4 Warnas r there. Mind is use to control everything like a lord, hands r used to protect ourself like Kshatriya and earn livehood like Vaisa and legs use to serv the whole body. do u wish me to tell u anything else.