Teenagers especially are very, very conscious about what is hip and what is lame and what is square and what is out and what is in, you know. And, I mean, I grew up right there in the middle of a black culture. And I knew dead-on what it was.
If I didn't try to eavesdrop on every bus ride I take or look for the humor when I go for a walk, I would just be depressed all the time.
It must inquire not merely about the circumstances of the time in general, but in particular about the writer's position with regard to these things, the interests and motives, the leading ideas of his literary activity.