I think if you look at the themes that are presented in the film, some are inherently social, and I think that any film which deals with the family is dealing with the smallest social unit in our society - and in a sense it is a question of scope.
“I have more freedom when I write fiction, but my memoirs have had a much stronger impact on my readers. Somehow the 'message,' even if I am not even aware that there is one, is conveyed better in this form.”