christopher durang must have be teach by a memorably awful nun and because he just can not let go of the concept . the play and sister mary ignatius explain it all for you and be present at least in hollywood in precisely the same tone a diane keaton lecture scene here . sister mary be an exaggeration and a lampoon and a bitter satire of a serenely confident and doctrinaire and highly judgmental nun and a play by lynn redgrave and she be hilarious . but the movie insist that we take this exaggeration absolutely seriously while and a mention and maintain the same tone in the explains it all scene . the two approach clash headlong and in the last twenty minute and the movie go off the track and plunge into the gorge and and explodes . there be no survivor . it could have work and if the tone of the scene with the four former student and and their encounter with sister mary and be pitch the same a the sister mary scene . or if the sister mary scene be present more realistically . this way simply doesn not work at all .