Here's why:
* Focus on the inner world: The title emphasizes the exploration of a character's thoughts, feelings, and motivations. It suggests a deep dive into the internal landscape of Willy Loman, revealing his hidden anxieties, desires, and the complex interplay of his past and present.
* Emphasis on the subconscious: The phrase "inside his head" evokes a sense of the unconscious, suggesting that Willy's actions and motivations are driven by forces beyond his conscious control. This aligns with Miller's interest in psychoanalysis and its influence on human behavior.
* Themes of identity and self-deception: The title foreshadows the play's exploration of Willy's flawed sense of self, his inability to reconcile his dreams with reality, and his self-imposed pressure to succeed.
While *Death of a Salesman* ultimately became the more impactful title, *The Inside of His Head* offers a compelling glimpse into Miller's intention to delve into the psychological complexities of his protagonist, revealing the internal struggle that drives his actions and ultimately leads to his tragic downfall.