Amid some unsurprising considerations from major italian popular figures of the time, Pasolini publicly asks questions related to sex, ethics, sociology and politics to those bold and naive enough to attempt an answer.
The value of such an endevour - wether it is hundreds or hundreds of thounsands of interviews - is (admittedly by the author) debatable at best except for some - nowadays obvious - sociological observations.
Fortunately Pasolini closes (and saves) the film with a greatly poetic final 3 minutes section that feels like a wrap up of the "results" of his inquiry:
"Do men care about anything but living life? A couple getting married. They don't know anything about their love. Life is merciless the most when it is happy and innocent. The knowledge of what's good or evil lies ahead of this forgetfulness of those busy living. And those knowing don't talk in front of such a grace unwilling to learn. But this silence is criminal."
IMHO the movie is in this aphorism. While never boring the interviews are not really interesting (let alone sociologically relevant) either. The documentary was released rated for 18yo: a side note that again summarizes the point we can make today out of it.