Two propositions of law emerge from the above observations. Firstly, once the promise is solemnly given by the State with an intention that when acted upon, it would create a legal relation and acting on it the promisee has changed his/her position and incurred liability, the State must be held as bound by the promise, except when owing to change of circumstances or subsequent developments larger public interests demand that the promise be not enforced against the State lest newly established balance of equities would tilt against the Government or larger public interest. Secondly, the doctrine is equitable in nature, and therefore, it must yield when the equity so requires.