Film Aesthete on Instagram: "Jessica Chastain revealed that when she first came on board Interstellar, the character of Murph was originally written as a male in the early drafts of the script. However, Christopher Nolan decided to reimagine the character as a daughter, a creative choice that Chastain believes added a profound layer of emotional depth to the story. By shifting the dynamic from the more familiar and often-explored father-son trope to a father-daughter relationship, Nolan introduc