If you just read the book, you're taking in the narrative, you're taking in the characters, you're understanding it in a certain way. If you make a movie it's really an act of translation.
Life as a performance is just a way to look at life choices as character choices. Every morning you choose what to wear, you choose how to wear your hair, you choose your friends, you more or less choose your profession, and how hard you will work at it. Those are all things that an actor decides about his character when he is performing, and they are things that we decide in life. We create our "character."
In a movie, a book, or a play, a character doesn't live in a vacuum. She is subject to pressures from the world outside of her, just like we are in life. These pressures and circumstances shape character. Who your parents are determines your genetic make up: your skin color, your sex, your height, weight. Where you are raised does affect your worldview either positively or negatively, your accent. Your economic class affects where you go to school, what you eat, where you sleep.
I was being generous. Gia Coppola wasn't even a filmmaker at that time, but I asked her to do it, because I believed in her as an artist. And because I wanted a woman's take on the material. The book Palo Alto is very male-centric, but Gia carved out a bunch of the female characters, and brought them to the fore in the movie. And the project was richer for it.
We all age. You shouldn't discount it as a subject for a film. Just because the characters are dealing with issues that you might not deal with for another 45 years doesn't mean you won't like it.
Acting is an art form and you want to take roles that are challenged and it's more of a challenge I think to play dark characters. Not that I want to always play those, but it is a challenge and challenges are rewarding and fun.
Anyone has outside influences. They are the results of the cosmic roll of the dice: this person is born Aragon the Ranger, this person is born a prisoner in North Korea, this person is born Carlos the Dwarf. Some of these things are out of our control, but that doesn't mean that they can't be changed. A character, just like a person in real life, is a summation of her actions and feelings. Our actions and emotions are not performed against nothing, they do not arise from dust, we are in constant friction, and/or flow with our surroundings.
I think all great comedies - or at least the comedies I like - it has some of the funniest moments, but it never breaks the spell for the audience. It never pushes the audience away by spoofing itself too much or undermining the characters or making them cardboard or flimsy. Everybody is really trying to do what their characters believe in - and so nobody breaks the spell of the world, even though in other ways it's a comedy and very funny.
Showing the addiction and unusual sexual practices are ways of just outlining a much bigger character trait.
