It is obvious that no society can endure unbridled conflict among its members. For a fairly stable state of affairs to prevail, conflicts of interest have to be resolved according to certain "rules of the game" which all accept, however reluctantly. The fact that matters are so resolved for some length of time may result in one group being placed at a growing disadvantage compared with the rest. Eventually, they may attempt to have the "rules" changed, by revolution if all else fails. If they succeed, the old social order will be overthrown and "play" will then be conducted according to new rules. Marx's vision of the rise of socialism following the demise of capitalism is the prime example of such a (fundamental) change.