A popular revolutionary philosophy of history pictures the procession of the ages as made up of a pageant of spook-social systems, each distinct from the others and coming in its appointed time. But social systems do not follow in a row, like elephants in a circus parade--each huge beast with its trunk coiled about the end of his predecessor's tail. The greater part of this "evolutionary and revolutionary" pageantry is simply dream-stuff. Those who try to march into Utopia in such an imaginary parade are not even trying to reconstruct society; they are sociological somnambulists. The crowd-mind clings to such pageantry because, as we saw in another connection, the crowd desires to believe that evolution guarantees its own future supremacy. It then becomes unnecessary to solve concrete problems. One need only possess an official program of the order of the parade. In other words, the crowd must persuade itself that only one solution of the social problem is possible, and that one inevitable--its own. Such thinking wholly misconceives the nature of the social problem. Like all the practical dilemmas of life, this problem, assuming it to be in any sense a single problem, is real just because more than one solution is possible. The task here is like that of choosing a career. Whole series of partially foreseen possibilities are contingent upon certain definite choices. Aside from our choosing, many sorts of futures may be equally possible. Our intervention at this or that definite point is an act by which we will one series of possibilities rather than another into reality. But the act of intervention is never performed once for all. Each intervention leads only to new dilemmas, among which we must again choose and intervene. It is mainly in order to escape from the necessity of facing this terrifying series of unforeseeable dilemmas that the crowd-man walketh in a vain show.