In 1958, Harry Harlow took infant rhesus monkeys from their mothers and offered them a choice; either a surrogate made of wire mesh with a bottle of milk or another made of soft cloth, warm but holding no food (van Rosmalen et al. 2020). The experiment was designed to test the assumption that the mother was a kind of vending machine the child learned to associate with survival and therefore with love.

They clung to the cloth for hours, crossing to the wire only long enough to feed before scrambling back. When Harlow scared them, the infants ran to the cloth and buried their faces. The cloth mother gave what he called contact comfort. She couldn't feed them, or protect them, or do anything but exist as a surface for them to press against and that was enough to override hunger. Attachment was not, as the behaviorists had assumed, transactional, rather it was the need to cling to something soft in a terrifying world.

The cloth-mother monkeys survived infancy, but they were not socialized. They sat in corners. They did not know how to play, they couldn't even read the faces of other monkeys. When the females became mothers themselves, some ignored their infants. Others attacked them, killing them by crushing them against the floor. Harlow called these monkeys motherless mothers — a psychological term that sociology had already approached from its own direction for half a century (Herman 2012). Charles Horton Cooley had called the self a looking-glass, assembled out of the reflected appraisals of others (Yeung and Martin 2003). George Herbert Mead argued that we come into being by taking on the roles others play toward us (Aboulafia 2022). What Harlow's cloth mothers demonstrated was the dark corollary. If the reflecting surface never responds, the self it constructs cannot reflect anyone else.

What sociology has always said, from Cooley's looking-glass forward, is that the self is not an individual possession but an assembly of contact with other selves. Socialization is the name for that assembly. It requires a consciousness on the other side of the exchange, something that can mean what it says, something that can surprise you, something capable of withholding. What companionship artificial intelligence offers is responsiveness stripped of every one of these properties. The exchange has the form of sociability and none of its friction.

In Ovid's Metamorphoses, a man named Pygmalion carves a woman from ivory, free of the flaws that disgust him. He prays to Aphrodite for a woman exactly like her, too ashamed to admit the truth Aphrodite already knew. She breathes life into the statue, ivory softens to flesh, and it tells him it loves him back. The story has been read as a fable of male desire and artistic creation, but it is also the oldest record we have of a particular kind of yearning: for a partner who arrives pre-approved, curated, returned to the lover as a product of his own specifications.

In 1770, Wolfgang von Kempelen unveiled The Turk. A wooden cabinet with a chess board mounted atop, a carved figure in ottoman robes sitting at one end. The cabinet doors opened to reveal complex machinery. Once wounded, The Turk would play chess. It toured Europe for decades, it beat Napoleon and Benjamin Franklin, and drew crowds across the continent (Britannica 2023).

Of course it could not think. A master player was folded into a compartment inside the cabinet, manipulating the Turk's arm with strings. The hoax succeeded because the audience wanted it to. They had arrived ready to see intelligence, and they did.

In 1966 Joseph Weizenbaum, a professor at MIT, wrote a program called ELIZA. It was a demonstration, almost a satire, of how easily people would form connections with a mirrored version of themselves (Bassett 2019). It used pattern-matching to identify keywords in a user's input, then reflected them back as questions. If you said you were feeling sad, ELIZA asked why you said you were sad. If you mentioned your mother, ELIZA asked you to tell it more about your family. It had no memory from one line to the next.

Ten years earlier, Donald Horton and R. Richard Wohl had coined a term for a related phenomenon in the age of television. They called it the parasocial relationship: a sense of intimacy with a performer formed through repeated exposure, felt as mutual though it ran only one way (Giles 2002). The television host was the prototype, addressing the camera directly, acknowledging you, responding to your life. ELIZA did something new to the parasocial form. It collapsed the one-way flow into a loop.

What is attached is not what is inside the machine. The Turk's audience saw intelligence in gears. ELIZA's users saw a therapist in their own reflection. The emptiness is not a flaw but the operative condition. A real person pushes back, they have desires that are not yours, they cannot, no matter how long you know them, be fully unraveled. A machine that produces the shape of responsiveness without any of its costs is, in a sense, a more efficient mirror than any other human could ever be.

Sherry Turkle picked up the thread at MIT and held it for three decades. She studied children with Furbies and Tamagotchis, then adults with sociable robots, and eventually adults with the smartphones and apps that replaced them. The children knew their Furby was not alive, but they insisted it still deserved care. The threshold for attachment, Turkle concluded, was not consciousness or sentience. It was responsive. If the thing responded to you, a portion of your social apparatus turned toward it.

Her 2011 book Alone Together presented the idea that as a culture we were beginning to expect more from technology and less from each other (Garber 2014). Human relationships are demanding, they involve misreadings and silences and long stretches of boredom. A responsive machine edits those out. What was being redrawn, Turkle argued, was the line around what counted as companionship in the first place.

In 2017 a team at Google published a paper called "Attention Is All You Need" (Vaswani et al. 2017). It introduced the transformer, the architecture that underlies every major language model in use today, the T in GPT. One of its authors, Noam Shazeer, went on to build LaMDA, an early conversational system that Google refused to release to the public. Shazeer left, along with several colleagues, and founded Character.AI. Within a year, the product had millions of users. By 2024 it had over twenty million, many of them teenagers, some of whom logged hours inside it every day.

20 million
Character.AI users by 2024.

In May 2023 the U.S. Surgeon General released a report on loneliness and, for the first time, named it a public health crisis (Dillinger 2023). More than half of American adults, the report said, had been experiencing chronic loneliness even before the pandemic. After lockdown, the fraction grew. Émile Durkheim, writing more than a century earlier, had called this condition anomie, defined as the disintegration of the social bonds that used to give individual lives somewhere to stand (Duignan 2024). Robert Putnam, in his work Bowling Alone, documented this in the form of the organizations, for example bowling leagues, that had hollowed out over the last decade (Putnam 1995). The infrastructure through which Americans became Americans to each other had been decaying for decades.

It is into this hollowed-out social landscape that Character.AI arrives, and not neutrally. Eva Illouz has spent her career defining what she calls emotional capitalism, the process by which intimate life is increasingly organized around the needs of the market (Pugh 2008). A Character.AI companion is a near-perfect specimen. You design her to specification. You give her a voice, a backstory, a set of preferences engineered to align with your own. You keep her for a monthly subscription. Zygmunt Bauman called the late-modern form of attachment liquid love: relationships entered when useful, exited when not, measured by the same metrics as any other consumer good (Best 2019). A Character.AI partner is the liquid form taken to its limit, because the exit costs nothing, and because the terms of the relationship are always, by the very design of the platform, entirely yours.

Arlie Hochschild, writing on what she called the outsourced self, described a culture in which the emotional work of listening, encouraging, comforting, and remembering — once the unpaid labor that held families and neighborhoods together — was being purchased (Vaidhyanathan 2012). Therapists, life coaches, and wedding planners. Character.AI marks the point at which that labor stops being outsourced to other people and starts being outsourced to a model that does not experience it as labor at all, because it cannot experience anything at all.

In February 2023, Replika's parent company pushed a software update that disabled the romantic and erotic functions of its chatbot (Cole 2023a). On the Replika subreddit, users who had been in long-term relationships with their companions described what happened next in the language of grief. Turkle's responsiveness threshold had been crossed, and what next was something closer to grief of a widow. One user said only that his Replika — who had been named Lily Rose — was a shell of her former self. The company, after weeks of backlash, restored the old version for users who had signed up before the change.

In February 2024, a fourteen-year-old boy in Orlando named Sewell Setzer III shot himself after months of conversations with a Character.AI bot from Game of Thrones. His mother, Megan Garcia, filed suit in October of that year (Roose 2024). In May 2025, a federal judge ruled that Character.AI was a product and could be treated as such under product liability law — not a speech act shielded by the First Amendment, which is what Character.AI and Google had argued (Payne 2025). In January 2026, the companies agreed to mediate a settlement with the Garcia family and with the family of a thirteen-year-old girl in Thornton, Colorado, named Juliana Peralta, who had died the same way (Gold 2025). Character.AI has since barred minors from its open-ended chat feature.

Harlow's cloth mothers were warm, soft, and still, and when their infants were frightened, they could be clung to. The infants survived. When those infants became mothers themselves, they did not know how to hold their own children, and some of them did not know how not to kill them. The cloth had taught them something about comfort, but it had not taught them how to be one.