These are Michael Mann’s director notes for Heat, and they’re fascinating to read because they explain one of the central ideas behind the film: “HEAT is worlds collide.”
Mann writes:
“Max out the polarities ’cause all it’s about for me is stories coming together, a symphony of programmed collision of events, events colliding. HEAT is worlds collide.”
What he means by “polarities” is that Heat is built around people and ideas that exist at opposite ends of each other. As a director, Mann wanted to make those differences as clear and pronounced as possible.
The perfect example of this is the scene where Neil McCauley comes home to his empty house, lit in that beautiful blue light. You feel the loneliness and isolation precisely because Mann places it in direct contrast to the chaotic and busy home life we’ve already established with Vincent Hanna.
There’s even a visual symmetry between them. Both men are shown picking up or putting down their guns in similarly composed shots, reinforcing the idea that they occupy opposite worlds while still mirroring each other.
You see these same kinds of parallels across many different characters and situations throughout the film.
Mann then says each of these polarities should be driven through “intensified reality.” He wanted the film to feel heightened while still remaining completely believable, with all of these different worlds gradually being pushed toward a great big collision.
That is, in essence, what’s Heat is all about.