In my mind, the two worlds that are brought out in the first scene are the realities of Blanche and the world. The setting is important in that Stanley and Stella live in a working class or poor area of New Orleans. The industrial, cramped, and tightly frantic condition of life contrasts with Blanche, who represents a vision of the "Old South." She lived on Belle Reve, a plantation with "columns" and where life was different than in the industrialized vision that Blanche sees in front of her now. Blanche, herself, might be a world that is in contrast with what is there. She is noticeable awkward at this her entrance into this world, seeking out a drink to calm her nerves. She is set apart from this environment and is almost a juxtaposition to it. Blanche's entrance into the first scene and the awkwardness that she brings to it helps to add to the disjointed relationship between Blanche and the modern setting.