In the final credits it says that Philip G. Zimbardo served as scientific adviser for this film. Not only the author of a world-famous introductory book on psychology, Zimbardo was also professor at Stanford University and in this position responsible for the infamous "Stanford Prison Experiment" that was later, among others, turned into a decent film by German director Oliver Hirschbiegel in the 90s. "Il Giorno prima" has some elements of that particular experiment. Whereas back in Stanford volunteers were given the roles of guardians and prisoners and stuck into an improvised prison, "Giorno" has a bunch of people residing in an atomic bunker for two weeks to explore the psychological difficulties that may arise from such a situation. In Stanford, things went wrong: The "guardians" used their roles to punish and humiliate the "prisoners", displaying raw violence in a surrounding that was only to be taken "as if"; Zimbardo had to stop the experiment in order to save the participants' lives. The "Stanford Prison Experiment" gave an insight on how people behave under extreme circumstances. This is repeated in "Il Giorno prima", this time located in a German bunker, with Burt Lancaster in a sort-of "homage" to Zimbardos own original role. As one would expect from an experiment (though the inhabitants of the bunker are not so suspicious), stimuli from outside are brought in, thereby creating arguments, discrepancies and finally even violence. The "moral", so to say, is not surprising, and the acting isn't so great, but the main fault is the very naive script. Then again, it still is an entertaining flick, well worth a look but probably not two.
