“18. The State had evolved the principle of reservation to an office of the State or post as an affirmative action to accord socio-economic justice guaranteed in the Preamble of the Constitution; the fundamental rights and the directive principles which are the trinity of the Constitution to remove social education and economic backwardness as a constitutional policy to accord equality of opportunity, social status or dignity of person as is enjoined in Articles 14, 15, 16, 21, 38, 39, 39A, 46 etc. Article 335 enjoins the State to take the claims of Dalits and Tribes into consideration for appointment to an office/post in the services of the State consistently with efficiency of administration. Though OBCs are socially and educationally not forward, they do not suffer the same social handicaps inflicted upon Scheduled Castes and Scheduled Tribes. Articles 15(2) and 17 furnish historical and social dissatisfaction inflicted on them. The object of reservation for the Scheduled Castes and Scheduled Tribes is to bring them into the mainstream of national life, while the objective in respect of the backward classes is to remove their social and educational handicaps. Therefore, they are always treated dissimilar and they do not form an integrated class with Dalits and Tribes for the purpose of Article 16(4) or 15(4). Obviously, therefore, proviso to Rule 13 confines the 5% further cut off marks in the preliminary examination from the lowest range fixed for general candidates. So, it is confined only to the Scheduled Castes and Scheduled Tribes who could not secure total aggregate marks on par with the general candidates. The Rule expressly confines the benefit of the proviso to Scheduled Castes and Scheduled Tribes. By process of interpretation, OBCs. cannot be declared alike the Scheduled Castes and Scheduled Tribes. Therefore, the contention that the doctrine of fusing "any backward class of citizen" in Article 16(4), further classification of Scheduled Castes
