Chasseguet-Smirgel argues for the ego ideal theory's relevance to the psychology of the group. She claims that the ego ideal "tends to reinstate Illusion," unlike the superego, which " to promote reality" (EI 76). Because of this fundamental opposition, the superego may be "swept away, as it were, by the sudden reactivation of the old wish for the union of ego and ideal." As Freud argued in Group Psychology and the Analysis of the Ego ("Massenpsychologie und Ich-Analyse"), the authority of the group can easily be substituted for the conscience of the individual, thus removing the superego's inhibitions and licensing forbidden pleasures ("The ego ideal" p. 78-79).