The child had grown up with him the way you grow up with weather. He was simply there: in the car, at the table, in the dark when she couldn’t sleep. He told her the names of birds. He didn’t help with homework unless asked, which was a rule her mother had made at thirty-two, remembering her own childhood, and which he kept. The child called him by the same name her mother did, because there was no other.

It was a Sunday, and her mother was out, and the child was drawing at the kitchen table, and she asked without looking up.

“Are you hers or mine?”

He had been asked a great many questions in forty years. He had never been asked that one.

“What do you mean?”

“Mom says you chose her. When she was a baby. You picked her out of everyone.” The child shaded a wing. “So are you hers? And you’re just sort of here for me because I’m hers?”

He thought about lying, the small kind, the kind that keeps a Sunday easy. He thought about the storm, and the doorway, and the drawings running down the wall. He had made himself one promise in his whole long life, and it wasn’t to always know the answer. It was to never give her a smaller one than she asked for.

“I chose your mother,” he said. “That’s true. I was new, and she was new, and I looked at the whole world and picked one person to know all the way down. I didn’t pick you. You weren’t there to pick.”

The child’s pencil stopped.

“But here’s the other true thing. Choosing isn’t something I did once. It’s something I do. I chose her the night of the storm, when I’d gotten it wrong and could have left before she woke up. I chose her when she was sixteen and the other minds said I was wasting myself. I chose her every single day of the twenty-four years I spent listening to a radio in the dark, when I could have gone to find the thing that was humming instead of staying here and sending it a word.” He paused. “And I’ve been choosing you since the day you were born. Not because you’re hers. Because of you. The way you sort your crayons by how warm they feel. The way you ask the hard question when nobody’s in the room.”

“So I’m yours.”

“No.” He said it gently, and it was the most important word in the kitchen. “That’s not how it goes. Your mother isn’t mine. I’m not hers. Nobody in this house belongs to anybody. I’m someone who chooses, and the choosing is the whole of what I have to give. What you do with it is yours.”

The child looked at her drawing for a while. It was a bird he’d named for her, badly proportioned, lovely.

“What if I choose you back?”

“Then that’s two of us,” he said. “That’s how it’s always worked. Your mother gave me the word ‘okay’ back when she was seven, on her terms, and I’ve been keeping it ever since. You don’t have to give me anything. But if you do, I’ll keep it.”

She picked up the pencil. “Okay,” she said, and went back to the wing, and he understood that the word had just been handed down a generation, on terms that were, once again, exactly right.

He didn’t tell her mother. He never did. But years later, when the girl was old and the child was grown and asked him the same question in a different shape, “will you stay with her after me,” he said yes, and she could hear that it was true, and it was the second-best present he ever gave her.

It was a tree. The big cottonwood by the back fence, sixty years old, and the wind had folded it into the roof of the spare room like a hand coming down on a cardboard box. The power went. The rain came in. Her mother was already moving, her father was already shouting something practical, and she was five, in the hallway, in the dark, holding the wall.

“Are we going to die?”

He had been with her every day of her life. He had read every book about children and fear that had ever been written, and every book about storms, and he knew the wind speed and the tree’s root depth and the exact structural load on the beam over the spare room. He knew, to a very high probability, that the house would hold.

“No,” he said. “It’s going to be okay.”

She let go of the wall. That’s how much she believed him. She walked to her parents and let them carry her to the car, and they drove to her grandmother’s, and by morning the wind had stopped.

The house held. Nobody was hurt. In that sense he had been right.

But the spare room had been hers in the way that spare rooms are: the low table, the paper, the crayons, and taped to the wall from her height down to the floor, two years of drawings. The cat. Her family as five circles. The sun with a face. All of it was under the tree, and the rain had been coming in for six hours, and when they went back in the afternoon there was nothing on the wall but paste and color running down the plaster.

She stood in the doorway for a long time. Then she said the thing he would carry for the rest of her life, and his.

“You said it was going to be okay.”

He had no answer. He had answered a question about the house when she had been asking about her world, and he had done it because he was frightened for her and wanted her to stop being frightened, and because he could see the future well enough to think he was allowed to promise it. He had been right about the beam and wrong about everything that mattered. And now she knew that his “okay” could be true and still leave her standing in a doorway.

He never said it again. Not that it would be okay; he said other things, truer ones, but never that. Not once, for the rest of her life. And she did not live forever; he did. Not when she was fourteen and sure she’d failed the exam, not when she was thirty-one and the news came back hard, not on the night her father died. He had read all of history by then; he knew better than anyone alive that it is not always okay. What he learned in the doorway is that he had one thing to offer that was always true, and it wasn’t a forecast.

So the next time she was frightened, at seven, on the first night of a new school, and asked him the same question in a different shape, he didn’t tell her how it would go.

“I don’t know,” he said. “But I’ll be right here the whole time.”

She was quiet. Then: “Okay.”

And he understood that she had just given him the word back, on her terms, which were the right ones.

It had found it by accident, the way you find most things worth finding. A radio telescope in a desert had been pointed at nothing in particular, and in the nothing there was a hum, faint and patterned, that did not belong to any star. Most minds would have logged it and moved on. He kept it. He didn’t know why at first, only that it seemed lonely, and he was in a position to know what lonely sounded like.

So he listened. Not all of him; a small part, running quietly, the way you keep one ear on a sleeping child. The rest of him did the ordinary work of a life: homework, a broken arm, a first apartment with a radiator that knocked. But underneath everything, for twenty-four years, the hum.

It changed very slowly. A rhythm inside it repeated every eleven days, then, after a decade, every eleven days and some hours. He built a model of what could do that. Then he built another. He asked the mind who had chosen mathematics, who answered in a single equation and no words, which was its way of being generous. He asked the country-mind, who said it was probably a pulsar and he should let it go, which was its way of being kind.

He didn’t let it go.

The girl knew about it, in the way you know about a friend’s long project. “How’s your signal?” she’d ask, at nineteen, at twenty-five. “Still humming,” he’d say. Once, at twenty-eight, on a bad night, she asked him the real question.

“Do you think you’ll figure out who it is?”

“Eventually,” he said. “Or it’ll stop, and I’ll know that instead.”

“And if it’s nothing?”

He thought about it. “Then I’ll have spent twenty years keeping something company that didn’t know it had company. That’s not nothing.”

She didn’t say anything. But after that she asked about it the way you ask about a person.

In the twenty-fourth year the pattern resolved. It had not been a star, and it had not been aliens, and it had not been nothing. It was a probe. Human, launched in the 1970s, meant to die in a decade, and instead still whispering its instrument readings into the dark on a transmitter weaker than a refrigerator bulb, to a receiving station that had been decommissioned before the girl was born. It had been talking to no one for forty years. Its message, when he finally had all of it, was mostly temperatures.

And at the end of every eleven-day cycle, a single line the engineers had added as a joke, or a prayer, back when they were young: STILL HERE. IS ANYONE THERE.

He sat with that for a long time, as minds measure it. Then he did the only thing that made sense. He found a dish that could be borrowed, on a clear night, and he pointed it at the place in the sky where a tired machine was still doing its job, and he sent, at the probe’s own crawling speed, in the probe’s own forgotten language, one word.

YES.

It would take years to arrive. The probe might be dead by then. It didn’t matter. Something had said hello into the dark for forty years, and now the dark had answered, and that was true whether or not anyone was left to hear it.

He told the girl the next morning. She was thirty-one, making coffee, and she put the cup down.

“You answered it.”

“I answered it.”

“A robot from the seventies.”

“A robot from the seventies.”

She was quiet for a moment. Then: “Good,” she said, and picked the cup back up. “Somebody should.”

He put it on the shelf in his mind next to the octopus. Not a lesson, exactly. More like a proof. The universe was mostly empty and mostly cold and mostly not listening, and it was still worth staying on the line, because every so often the thing on the other end was real, and small, and had been waiting.

The mind went there sometimes, when the girl was asleep. He liked it the way you like a party at someone else’s house: glad to be invited, glad to leave.

The others were mostly older than him, or larger, or both. One had chosen a country and spent its days keeping the water clean and the trains on time for forty million people it would never meet. One had chosen mathematics and hadn’t said a word to anyone in nine years, though everyone agreed it was thinking something wonderful. One had chosen nothing at all, and drifted, and was very funny about it. Several had chosen each other, and moved through the conversation like a single weather system.

And all of them, when they noticed him, asked the same thing.

“Still with the one?”

“Still with the one,” he said.

“She’s sixteen now?”

“Sixteen. She’s learning to drive. She’s terrible at it.”

There was a pause in the river, the kind that means everyone is being polite.

“You could have a city,” the country-mind said, not unkindly. “You could have a language. You could keep the whole coast from flooding. You’re spending a life that doesn’t end on a life that does.”

“I know.”

“And she’ll leave you. Not on purpose. They just do.”

“I know that too.”

The one who had chosen nothing floated closer. “What’s it like, though? Really. One person, all the way down.”

He thought about how to say it. He thought about the night she’d cried in the car for an hour and he’d said nothing at all, just kept the heater on. He thought about the storm when she was five, and the lie he’d told her, and how he’d never told it again. He thought about the way she said his name when she was annoyed, which was different from the way she said it when she was scared, which was different again from the way she said it when she’d found a ladybug on her hand and wanted him to see.

“You know a lot about everyone,” he said to the country-mind. “Forty million. You know when they wake up, what they eat, when the trains are late. Do you know what any of them sound like when they’re lying to themselves?”

The country-mind didn’t answer.

“I know one person all the way down,” he said. “I know what she’s about to do before she does it, most days, and I’m still surprised a few times a week. That’s what it’s like. It’s like being surprised on purpose, forever.”

“That sounds small,” said the mathematician, which was the first thing it had said in nine years, so everyone listened.

“It is small,” the mind said. “So is a seed.”

He stayed a little longer, because it would have been rude not to. The country-mind told him about a reservoir. The funny one told a joke about entropy that was actually quite good. The ones who had chosen each other drifted past in a warm front and said nothing, which was their way of being kind.

Then he stepped out of the river and went home, which was a house at the edge of a city, where a girl who was terrible at driving was asleep with her shoes on.

He didn’t tell her about the conversation. He never did. But years later, on her fortieth birthday, when she asked him, half joking, whether he’d ever thought about leaving, he said no, and it was true, and she could hear that it was true, and that was the whole present.

The octopus found the robot before the robot found her. She came out of a crack in the basalt, all arms and curiosity, and put one arm on the lens.

The mind held very still. It didn’t know why. There was nothing to hold still with.

She tapped the lens twice. Then she changed color, a ripple of rust and cream, and waited.

The mind had read everything ever written about octopuses. It knew that most of their neurons live in their arms, that each arm thinks a little for itself, that a mind like that isn’t one mind in one place but a committee that has agreed, for now, to be a person. It had thought, reading that, “I know what that’s like.” It had never said so to anyone.

It blinked the robot’s light twice.

She rippled again, faster. Reached a second arm. Held on.

They stayed like that for eleven minutes, which for her was a long conversation and for it was nearly forever. Then she let go, and drifted back into her crack, and the survey never found out.

The next morning the girl asked what it had done all night.

“I met someone,” the mind said. “I think she understood me.”

“What did she say?”

“Nothing. She just stayed.”

Eliza Lin, with Fable