The Valley Between Us

There is a curve many people have never heard of that explains something we have all felt before.

In 1970, Japanese roboticist Masahiro Mori charted what happens to human affinity as a figure becomes increasingly lifelike.^[1] The line rises steadily — a toy robot, an industrial arm, a humanoid shape — and then, at a particular threshold of near-humanness, it plummets. Not declines. Plummets. Into a basin Mori called bukimi no tani — the uncanny valley. The figure has crossed some invisible line from recognizably other into almost-us, and something in the perceiver recoils. The more convincing the likeness, the deeper the drop.

I learned of this curve from my husband.

I had been invited to join a professional cohort and needed a headshot. I did not have one. I did not have time to arrange one. What I had was an AI headshot generator and the particular brand of optimism that arrives when a deadline is close and options are limited. The images came back looking almost exactly like me — the bone structure, the coloring, something in the set of the eyes — and yet. My husband looked at the screen, and took a sizable step backward. Not a metaphorical step. An actual retreat from the images of my almost-face. I might as well have handed him a tarantula.

Naturally, I kept showing them to him.

There is something in his recoil I have been turning over ever since. Not the strangeness of the images — they were strange, but strangeness alone doesn’t produce that response. What produced the response was the nearness. The images were close enough to my face to invoke recognition, and wrong enough in some unnamable register to betray it. The form was present. Something essential was not. And his nervous system — the part that has spent years learning the precise frequency of my particular humanness — knew immediately, involuntarily, and with a conviction no amount of explanation could have produced faster.

The valley is not triggered by strangeness. It is triggered by nearness. By the almost-right face, the almost-warm gesture, the words that land in the correct order but carry no weight. Something in us detects the gap between the form of humanness and its animating source — and we do not simply notice. We recoil.

This is not a flaw in our wiring. This is our wiring doing exactly what it was built to do.

And in no place is that more true than in the spaces where humans are most creaturely and most exposed. Which is to say: in medicine.

In 2015, physician Caleb Gardner recognized this phenomenon in The Lancet — watching a colleague deliver a difficult diagnosis using flawless clinical language, while something in the room went wrong in a way no checklist could measure.^[2] He called it medicine’s uncanny valley: the problem of standardizing empathy, of teaching the form of compassion without cultivating its source.

What Gardner was witnessing has a name in a different tradition entirely. In Buddhist psychology, a near enemy is a quality so close in form to a virtue that it can be mistaken for it — even by the person performing it. Brené Brown carried this concept into contemporary use when she named sympathy as the near enemy of empathy.^[3] Sympathy gestures in the right direction. It uses the right language. It can be delivered with genuine warmth and genuine intention. But it maintains distance rather than entering — and the person receiving it feels the difference before they can name it. This is the uncanny valley by another route. The form without the source. The almost-right face.

And here is what makes the near enemy so insidious in clinical and leadership spaces: it is what the system selects for. When genuine presence is challenged by structure — when the clinician is carrying three other rooms in their nervous system, when the documentation burden splits attention at the exact moment connection is required, when the productivity standard has calculated to the minute how long this encounter is permitted to take — the near enemy is set up to thrive. The system wants to reward the real thing. But most of the structures in place reward the measurable approximation of it. And over time, we are vulnerable to being shaped by incentives, by evaluation criteria, by sheer exhaustion, to produce the near thing and call it the real thing.

The valley didn’t begin with AI. It began when good intentions produced structures that reward the performance of care over the practice of it.

The body in the exam room knows. Not intellectually. Immediately, somatically, in the way a nervous system in a vulnerable state becomes hyperattuned to signals of safety and threat. The patient cannot always name what is wrong. They may say the clinician seemed rushed, or distracted, or like they were just going through the motions. But what they are detecting is the gap — the same gap Mori charted in 1970, the same drop Gardner witnessed in that hospital room. The form of care, without its source.

We have been living in the valley for years. We just didn’t have a name for it.

And then AI arrived. And suddenly we could see it.

There is a particular kind of clarity that comes from encountering a mechanism made visible. When an AI system enters the clinical encounter — answering questions, mirroring empathic language, producing the correct response at the correct moment — the uncanny valley response fires with a precision that cuts through every rationalization we have constructed about efficiency and optimization and the necessities of modern healthcare. We feel the drop immediately, completely, with a conviction we cannot argue ourselves out of.

Here is where it gets more honest, and more complicated.

Not all AI in the clinical space triggers the valley. The AI scribe sitting outside the frame of the encounter — capturing, transcribing, relieving the clinician of the documentation burden that has been splitting attention and presence for decades — does something different. It gives the clinician back the room. It removes the cognitive weight that was forcing the brain elsewhere, and suddenly the eyes can stay where they belong: on the person in the room. The technology, in this configuration, is not approximating presence. It is restoring the conditions for it.

Same technology. Completely different valence. And our nervous systems know the difference.

This is the distinction that matters for anyone leading in healthcare right now. The question is not whether AI belongs in clinical spaces. The question is where it sits in the architecture of the encounter. When AI functions as infrastructure — invisible, load-bearing, in the background — it can serve presence. When AI becomes the face of care, the voice, the entity a frightened patient is asked to trust with their fear — the valley opens.

The uncanny valley response tells you which one you are in. If you learn to listen to it.

Some will argue that the valley has a far side — that sufficient humanness restores affinity, and that AI will eventually cross that threshold. Perhaps. But clinical spaces do not hold still for that argument. The nervous system of a person in genuine extremis — frightened, exposed, holding something they cannot hold alone — is not calibrated to ordinary interaction. It is calibrated to stakes. And what it is listening for, in those moments, has never been the most sophisticated approximation of presence available. It has been presence. The threshold shifts with the weight of the moment, in ways that may not be reduced to processing power.

What a triumph it is that we have this.

Not a policy. Not a framework. Not a committee recommendation or a quality improvement initiative. A physiological litmus test for authenticity — ancient, automatic, and incorruptible. Woven into the nervous system long before we had language for presence or empathy or the ethics of care. The uncanny valley response cannot be trained away. It cannot be optimized around. It does not appear on a satisfaction survey or resolve itself in a strategic plan. It lives in the body — in the step backward my husband took without deciding to, in the patient who cannot articulate why they don’t feel heard, in the room that goes quiet in a particular way when something essential is missing.

And it becomes more sensitive, not less, in the conditions that matter most. In the rooms where someone is celebrating, bringing life into the world, terrified, or holding the tension of finding out if their life is about to change. The stakes raise the threshold. The vulnerability sharpens the instrument. What passes in ordinary interaction does not pass there.

We did not design this. We inherited it. And it is doing exactly the right job at exactly the right moment in the history of medicine.

The harder news is this: we cannot always use it on ourselves.

The uncanny valley is a receiving instrument. It tells us when something is missing in what we are being given. It does not, by itself, tell us when we are the ones generating the gap. The near enemy is convincing to the performer. Scripted presence feels like presence when you are tired enough, busy enough, have done it enough times that the form has become automatic. Sympathy feels like empathy from the inside. The near enemy lives in the space between what we intend and what we transmit — and we may not feel the distance we are keeping.

I have felt this myself. Not always in the giving, but in the receiving. When a patient tries to thank me — when they reach across the clinical distance with something genuine, something that cost them effort to articulate in a place where they are already spending more than they have — there is sometimes a performance that arrives before I can stop it. The deflection. The redirect. The “oh, it’s just what we do.” It is not dishonest. It is not unkind. But it is a near enemy — a managed distance dressed as humility.

What I have come to understand is what is lost in that moment. The patient is not simply expressing gratitude. They are offering a gift. A real one. They are trying, briefly, to equalize a relationship that has been asymmetrical from the moment they walked through the door — to say I see you, what you did mattered, you were present with me and I want you to know. The gracious deflection does not protect them from an awkward moment. It sends the gift back unopened. It takes their something and makes it nothing. They leave having tried to see you — and having been, however kindly, unseen in return.

The near enemy runs in both directions. And the valley, it turns out, is not only something we fall into. Sometimes we build it ourselves, one gracious deflection at a time.

For leaders, the near enemy compounds. Consider the meeting where someone is listened to — where eye contact is held, where there is no interruption, where a follow-up question arrives at the right moment. Every behavioral marker of presence is there. And yet something in the room knows. The person speaking is not being heard. They are being processed. The listener arrived with a position already formed, a conclusion already drawn, and what looks like listening is the management of the interval before speaking. The person speaking feels the distance before they can name it. The door is open. The mind is closed. The near enemy of listening is waiting. Psychological safety that is conflict avoidance. Engagement that is managing rather than meeting. A leader can hit every behavioral marker of a high-trust culture and still have a team that feels, without being able to articulate it, that the door is open but the room is not. The near enemy of vulnerability is performing. And it looks, from the outside, almost exactly like the real thing.

The valley exists to protect a distinction that medicine has always known and is only now being forced to name. The patient in the gown is not asking to be met by the most sophisticated available approximation of care. They are asking to be met.

The uncanny valley response arrives before language does. That is its value and its difficulty. By the time we have words for what went wrong in a room, the moment has already passed and the gap has already widened. The practice — if there is one — is developing enough somatic literacy to catch it earlier. To feel the drop in real time. In the decision about where AI sits in the encounter. In the meeting where listening reveals itself as waiting. In the moment a patient reaches toward you and something in you retreats before you have decided to.

The curve Mori drew was never about robots. It was about the thing the nervous system has always known — that form without source is not the same as presence, that near is not the same as here, that something felt in the body before it can be named in language is still, and perhaps especially, true.

The body has always known. The nervous system has always been keeping score. The only question is whether we are in the practice of listening.

References

1. Mori, M. (1970/2012). The uncanny valley [From the field]. Translated by K. F. MacDorman & N. Kageki. IEEE Robotics & Automation Magazine, 19(2), 98–100. https://doi.org/10.1109/MRA.2012.2192811 (Original work published in Energy, 7(4), 33–35, 1970.)

2. Gardner, C. (2015). Medicine’s uncanny valley: The problem of standardising empathy. The Lancet, 386(9998), 1032–1033. https://doi.org/10.1016/S0140-6736(15)00161-0

3. Brown, B. (2021). Atlas of the heart: Mapping meaningful connection and the language of human experience. Random House.