An Anthropologist On Mars
Different minds, shared humanity
Description
In the autumn of 1986, a successful New York painter in his mid-sixties, known in Oliver Sacks's account only as Mr. I., ran his car into a truck and walked into a doctor's office with a strange complaint. He could still see sharp lines, depth, movement — his eyesight, in the ordinary sense, was intact. What had vanished was color. The world had turned to dirty gray and leaden white; his own paintings looked like ash, tomatoes read as black, his wife's skin had the tint of a rat. He had lost color so completely that he could no longer even remember what red had felt like.
Mr. I. is the man who opens An Anthropologist on Mars, the 1995 book in which Sacks, a neurologist by trade and a storyteller by instinct, gathers seven case histories of people whose brains work in unusual ways. A painter with no color. A surgeon with Tourette's syndrome. A man blind since childhood who regains his sight in his fifties. A woman with autism who designs cattle equipment. Sacks does not treat these as curiosities. He sits with them, visits their homes, watches them work, and asks a patient question the medical file rarely does: what is it actually like to live inside this brain?
That question is the whole book. Sacks had already made his name with Awakenings and The Man Who Mistook His Wife for a Hat, and here he sharpens a conviction that runs through all of it — that a neurological condition is not only something taken away. It is often a door into a different reality, one the person learns, sometimes brilliantly, to inhabit. The wonder in these pages is not that the brain breaks. It is what people build once it does.
The question we’re asking : When the brain works differently, is the result only loss — or the entry into another way of being human?What we’ll see : Seven lives inside unusual brains, and a neurologist who insists on asking what each of those worlds feels like from within.
Table of contents
01Chapter 1 — The colorblind painter and the world gone gray
Mr. I.'s loss was total and sudden. What Sacks calls cerebral achromatopsia is rarer and stranger than the color blindness people are born with: the eye's color receptors still fired, but a small region of the brain that assembles those signals into the experience of color had been damaged in the accident. The painter did not see a muted or faded world. He saw one in which color had never existed and could not even be imagined — he could not conjure red in his mind, could not dream in color, could not recall what his own vivid canvases had once looked like.
At first the change was unbearable. Food looked gray and became difficult to eat; his wife's face looked, to him, corpse-like. A man who had spent a lifetime organizing his perception around color found the ordinary world abruptly hostile. He avoided people in daylight, when the flatness was worst, and drifted toward the night, when a monochrome world at least made a kind of sense. For a while he thought his life as an artist, and perhaps as a person, was over.
02Chapter 2 — Tourette's, and the self that keeps moving
The second life Sacks follows belongs to Dr. Bennett, a surgeon in a small town in British Columbia who has Tourette's syndrome. Away from the operating table, Bennett is in constant motion: sudden tics, compulsive touching, involuntary lunges, outbursts of sound, a body that will not hold still. Tourette's, in Sacks's description, is not a disease that afflicts a person from outside so much as a force woven into the personality itself — impulsive, quick, sometimes wildly funny, always pressing.
What fascinates Sacks is the paradox at the center of Bennett's day. A man who cannot sit through dinner without ticcing operates on human bodies with complete precision. The moment he begins to cut, the tics vanish; the deep absorption of surgery seems to quiet the storm entirely, and returns the instant the work is done. Flying a small plane, doing fine manual tasks, playing with his children — certain kinds of focused, purposeful action dissolve the compulsions that otherwise govern him.
03Chapter 3 — The blind man who saw and wished he hadn't
Virgil had been blind since early childhood, functionally sightless for some forty-five years. He had built an entire life without vision — a job, a routine, a fiancée who, moved by the possibility of a cure, arranged for surgery to remove the cataracts clouding his eyes. The operation, medically speaking, worked. Light reached his retina again. Everyone expected joy. What actually happened was one of the most unsettling stories in the book.
When the bandages came off, Virgil did not see the world. He saw a chaos of light, movement, and color that meant nothing. A face was not a face until someone spoke; his own doctor was a blur of shifting shapes. Vision, Sacks explains, is not simply a matter of working eyes — it is a skill the brain learns, laboriously, in the first years of life. A brain that has organized itself around touch and sound for four decades does not know how to read the flood of images now pouring in. Virgil could see, in the physical sense, and yet remained profoundly unable to make sense of what he saw.
04Chapter 4 — Temple Grandin, and the anthropologist on Mars
The book takes its title from its final subject. Temple Grandin is a professor of animal science with autism, a woman who has become one of the world's foremost designers of humane livestock facilities. Describing her lifelong effort to decode the emotional signals other people read instinctively — the glances, the small talk, the unspoken rules of a room — she tells Sacks that much of the time she feels like an anthropologist on Mars. She observes human beings closely, studies their behavior, learns their customs by rule and repetition, yet remains a visitor among a species whose inner life she has to reconstruct from the outside.
What Grandin cannot do intuitively, she has built by other means. Her thinking is intensely visual; she reports designing entire structures in her head, running them like film, testing them before a single beam is welded. Her unusual sensitivity to how animals experience fear and comfort — an empathy that flows more easily toward cattle than toward people — has made her work genuinely better than that of neurotypical engineers. Her autism is not a subtraction from her competence. It is the ground of it.
05Conclusion
Mr. I. never got his color back, and never wanted it. Bennett went on operating, tics and all. Virgil returned, with something like peace, to the world he touched and heard rather than saw. Grandin kept translating between species and between minds, an anthropologist among Martians who happen to be her fellow humans. Sacks leaves each of them mid-life, still becoming, because that is what he came to show: not the moment of damage, but the long, inventive work of living afterward.