The members recognize the effective rules they accept and them for the reason to find that excessively also they think in the same way. However, the basic structure of the society (the institution) well is not specified if it deals with legislative bodies, schools, administrative centers, but this does not matter now what it matters is to know if the recital of the two principles would be efficient. These principles would be originated from a contractual consensus called by Rawls of original position. The original position is the first movement in the formularization of the principles of justice in an institution. Is selected a group of people? endowed with rationality enough to be able to discern the choices? that hypothetically equal summer, without physiological and economic differences, that is, the original position is the fictitious state of equality that would characterize all the individuals.
In this hypothetical initial situation, all are independent, free of any exterior interferences that could stain its pure consciences with egoistic desires of supremacy; in the truth the autonomy is exactly the condition where the equality of all those guided by the reason in its equitable state more brando and is in vigor and from which if could formulate moral principles right. Soon, the arguments and the right to express them, the position of the parts, in the original position, similar and would be established in inherent ethical slight knowledge to the involved rationality. For this reason, in the original position, all make look like to guide themselves for the same optics and any formularization of principles would be observed under the same perspective of the involved ones, since all would be motivated by the idea of well general, therefore in the conception of the original position is implicit the slight knowledge of that all know what it is better for itself and for the others. CBS takes a slightly different approach.