Exactly. Here's a series of classic trailers for Alan J. Pakula's 1974 film The Parallax View, found on YouTube: The Parallax View, a superb drama about one man's paranoia that turns out to be ...
“If the picture works,” director Alan J Pakula said of 1974’s The Parallax View, “the audience will trust the person sitting next to them a little less at the end of the film.” ...