Authors:

If you know why someone is doing what they're doing, why they're behaving the way they are, then that's your job to reveal that, and often that's situational. The storytelling does that, and then some of it's your job as an actor to make that subtext come to life.

"Cate Blanchett, Peter Sarsgaard and Andrew Dice Clay Talk Blue Jasmine, Meeting and Working with Woody Allen, Plus Allen’s Best Female Protagonists". Interview with Sheila Roberts, collider.com. July 29, 2013.
If you know why someone is doing what they're doing, why they're behaving the way they are, then that's your job to reveal that, and often that's situational. The storytelling does that, and then some of it's your job