Is Hansberry being sarcastic by her words "indestructible contradictions" in the stage description of "A Raisin in the Sun"?
“The YOUNGER living room would be a comfortable and well-ordered room if it were not for a number of indestructible contradictions to this state of being.”
Hansberry's stage direction represents irony more than true sarcasm. In essence, Lena Younger has struggled to create a cozy home for herself and her children. She likes things to be in their place and expects Beneatha and Walter to follow her example. While Ruth seems to do her best in maintaining physical and emotional order within the apartment, none of Lena's other family members follow suit. Beneatha's character "contradicts" the order and comfort of the apartment by constantly bickering with Walter and demeaning him and by her tendency to jump from one interest to another. In turn, Walter's presence in the apartment creates constant chaos and discomfort with all of the apartment's inhabitants.
Hansberry juxtaposes the phrase "indestructible contradictions" with her description of the Younger house's physical nature to show the long-standing tension that exists just below the surface appearance of normalcy.