Caleb confronts Nathan about the ethics and intentions behind giving the AI Ava a gender and sexuality. Nathan challenges Caleb's understanding of consciousness and attraction, suggesting that Caleb's own preferences are as 'programmed' as the machine he is testing.
CALEB: Tell me.
NATHAN: Sure.
CALEB: Why did you give her sexuality? An AI doesn’t need a gender. She could have been a grey box.
NATHAN: Actually, I’m not sure that’s true. Can you think of an example of consciousness, at any level, human or animal, that exists without a sexual dimension?
CALEB: They have sexuality as an evolutionary reproductive need.
Format: Duologue · Genre: Sci-Fi · Source: Ex Machina · Author: Alex Garland · Characters: Caleb, Nathan
This compelling two-person scene, "Nathan's Justification," delivers a powerhouse of intellectual and emotional conflict. Caleb directly challenges Nathan's ethical choices regarding a new AI, specifically questioning the decision to imbue it with gender and sexuality. Their dialogue quickly escalates into a provocative debate about the very nature of consciousness, attraction, and manipulation, offering rich subtext for actors to explore.
Nathan is a brilliant, audacious, and morally ambiguous figure, accustomed to intellectual dominance and unafraid to provoke. He views Caleb's challenge not as a moral failing, but as an opportunity to dissect human biases and reveal hidden motivations. Caleb, in contrast, initially presents as the righteous questioner, but as the scene progresses, his own vulnerabilities and possibly subconscious desires come to the forefront, making him increasingly unnerved and self-aware. Both characters wield intellect as a weapon, but Nathan’s is honed by experience and a lack of compunction, while Caleb's is still wrestling with his own internal landscape.
This scene is an excellent choice for auditions due to its potent combination of intellectual sparring and intense character interaction. It provides ample opportunity for actors to showcase their ability to handle complex dialogue, navigate shifting power dynamics, and convey deep internal conflict. The provocative nature of the subject matter ensures an engaging performance, while the clear arc of Caleb's growing discomfort and Nathan's unwavering confidence allows for a dynamic display of acting range.
This duologue is perfectly suited for male identifying actors in the 30s-40s age range. It would particularly benefit actors seeking roles as a "Leading Man," "Authority Figure," "Everyman" grappling with complex situations, or a "Scientist." Its confrontational and philosophical tone makes it ideal for showcasing an actor's ability to embody intense or intellectually challenging characters, especially those who thrive on exploring power dynamics and ethical dilemmas in a contemporary setting.
When performing this scene, focus on the subtextual battle beneath the verbal exchange. For Nathan, lean into his intellectual superiority and the subtle satisfaction he takes in dismantling Caleb's assumptions; consider how his physicality might exude calm dominance. For Caleb, explore the journey from logical inquiry to personal discomfort and dawning self-awareness, allowing his carefully constructed facade to gradually crack. Pay close attention to the shifting eye contact and vocal dynamics, as these will be crucial in conveying the escalating tension and the unspoken implications of their conversation.