Describe symbolism in This Is Our Youth by Kenneth Lonergan

The sparse setting becomes an important symbol in the play, which takes place entirely in Dennis's studio apartment, an appropriately confined space for the limited lives of the two main characters, Dennis and Warren. Only three characters appear in the play; three others are spoken to by Dennis and Warren on the phone, but Lonergan does not include their words, which reflects and underscores the self-centeredness of the main characters.