There are three formulations that goes into Kant’s theory. According to Kant: Moral Law, the first formulation principle of reciprocity states that it merely bids us act in accordance with universal law bids us act on a principle valid for all rational beings as such, and not merely on one that is valid if we happen to want some further end. Hence, it bids us accept or reject the material maxim of contemplated action according as it can or cannot be willed also as a universal law. You can argue that the principle of reciprocity will not work in today’s society because not everyone should do something that someone else does. The second formulation is the principle of humanity, it states that you must never treat humanity as a means, but at the
