 What is the author's purpose for writing this?
Can a documentary use scripted scenes and yet remain ontologically authentic? The movie tracks four aging New Yorkers--two men, two women--through their lonely dating rituals, in the process depicting a universe of lusty, coupled-up haves and downcast, excluded have-nots, all viewed Rear Window -style through rectangular openings in the massive apartment houses in which they reside. The director selected his four subjects from many hundreds of potential candidates, followed them around for months, and then scripted their monologues and dialogues to reflect what he says he saw. The outrage it has prompted isn't the Puritan kind; it's more like legitimate revulsion at watching a blowhard pervert people's lives in the name of "larger dramatic truths."
 to explain different films he's seen recently
 to inform people that documentaries aren't always accurate  to persuade people to be critical of movies they watch  to explain different films he's seen recently  to inform the audience of the changes in cinema