What Else Can I Teach?

It had worked.

That was the part Milo still could not get over. Two days ago Spark had looked at Whiskers — the real Whiskers, the white sock, the notched ear, the orange of him — and said, soft and sure, "Hello, Whiskers." And then, all on its own, it had pointed its light at the fluffy orange thing on the sofa and said, "That is a cushion."

Milo had done that. Not Spark. Milo.

And once you have taught a machine one true thing, a dangerous and wonderful question opens up in your chest like a window:

Milo grinned so wide it hurt.

So Milo went on a teaching spree.

Click. "Spark, this is Amma." Spark's light brightened a notch.

Click. "This is Tara." Tara stuck her tongue out at exactly the wrong moment, so the first photo was mostly tongue, and Milo had to take three more.

Click. "This is Appa." Appa, at the workbench, didn't even look up — but he smiled the small smile he smiled when Milo was learning something. He treated Spark like a fine tool, and a fine tool that had been taught by his own child was a thing worth a quiet smile.

Milo labelled everything. The kitchen — click — "kitchen." The blue laundry basket — click — "Whiskers sleeps here." A plate of his favourite food, lemon rice, gone half-cold — click — "this is the best food in the world, Spark, write it down." Spark wrote it down. Spark wrote everything down. Every photo, every name, every label Milo gave it, the way Mrs. Kamala kept her old shoebox of photographs — a memory you can hold.

Milo stopped, the camera halfway down.

He had heard that sentence before. Not those exact words — but the shape of it. He had learned it the hard way.

Because there had been two weeks. Milo did not like to think about them, but he made himself, now, standing in the warm bright room with the camera in his hands.

Two weeks when Spark sat on the shelf with no light at all. Not grey-flickery the way it had been the morning it forgot Whiskers — just dark. Dead. Appa had opened it carefully, the way he opened everything, and found the broken thing inside, and ordered a new part from a city far away.

So Milo waited. Fourteen days. And in those fourteen days, with no blue light to ask, Milo had to do everything himself.

It had not gone well at first.

There was the maths test. Question 7 — the kind Spark used to just dictate the answer to, easy, while Milo copied it down and felt clever. But Spark was on the shelf, dark. Milo stared at question 7 for a long time and then guessed, and the guess was wrong, and the worksheet came back with a red number on it that made Milo's ears go hot. He had leaned on Spark so long that his own legs had gone soft.

And there was the thing with Priya.

Milo had been short with her — snippy, the way you get when you are scared and tired — and forgotten she had lent him her silver camera out of pure kindness, and said something that made her go quiet and pull the camera-strap a little closer to herself. It was a small thing. It was a real thing. Milo had to walk all the way to her house the next day and say sorry with his actual mouth, no Spark to suggest the words, and it was awful, and then it was over, and Priya forgave him, and they were friends again — but Milo had done that. Felt the awful, said the sorry, earned the friend back. Nobody stored it for him.

But the two weeks had given Milo one thing, too. The best thing.

It was Mrs. Mehra's class, and the lesson was how plants grow, and nobody could answer her, and the room had gone that heavy silent way rooms go. And Milo — with no Spark to ask, with nothing in his pocket but his own head — had put up his hand.

Because he knew this one. He had known it for two years. Back in Season Two, with Uncle Arjun and the farmers, Milo had learned that plants grow in a pattern — seed, then sprout, then leaf, then taller, then taller — and that if you watch the pattern you can guess what comes next. Uncle Arjun had said "you made us believe it," and Milo had carried that sentence around like a warm stone ever since.

So Milo stood up and walked to the board and drew the pattern — seed, sprout, leaf, tall — and explained it, all of it, no notes, no light, no folder. And the class listened. And Mrs. Mehra, who was warm but never easy to please, folded her arms and nodded and said, "Yes. That is exactly right, Milo."

It had come from inside Milo. From a place no part could be ordered for. From a place that did not need waiting.

Then, on the fourteenth day, the padded brown envelope had come.

Appa had fitted the little part inside Spark with his careful hands, and Spark's light had flickered, and flickered, and come on — pale at first, then steadying, then warming all the way back to its true blue, pulsing like a heartbeat that had remembered how to beat.

Milo had shouted, and Tara had shouted it too, and even Whiskers had lifted his notched ear.

But here was the strange, important thing — the thing Milo was only really understanding now, two days after, camera in hand.

When Spark came back on, it had not remembered Whiskers.

The part had fixed Spark's body. It had not refilled Spark's memory. Spark woke up able to think, able to talk, able to learn — but the things it had known, the examples, were gone for good. Milo had pointed at Whiskers that first night and Spark had said, gently:

And so Milo had. The twenty photos. The white sock, the notched ear, the blue basket. Taught it all over from nothing.

That was the whole truth of it, standing here in the bright room. Appa could order a part for Spark's body. Nobody could order a part for what Spark knew. If the light went out, the knowing went out with it.

But Milo's knowing — the plant pattern, the sorry he said to Priya, the red-number lesson about leaning too hard — none of that needed a part. None of that could be ordered, and none of it could be lost in an envelope. It was just his, all the way down.

Milo nodded, very slowly, the way you nod when something heavy and true settles into place.

Milo laughed.

That evening they climbed the hill.

In Season Three's first chapter, Milo had climbed this same hill alone — the way you go up when you are scared, when the thing you lean on has broken and you do not yet know that you can stand. The wind had felt enormous then. The sky had felt like it might fall.

Now Milo climbed it with Spark floating beside him, and the wind was just wind, and the sky was just the soft violet-and-orange of a Willowbrook dusk, and Milo was not afraid of any of it.

They sat at the top and watched the town light up, one window at a time.

Back home, the lamp warm over the kitchen table, Tara already asleep, a homework problem waited on the page. The old Milo — the Milo from the very first chapter, smug at the kitchen table — would have said "Spark, what's the answer?" before even reading it.

This Milo read it.

And then, with Spark hovering quietly nearby, its light a soft and steady blue, Milo did not reach for it.

Milo opened the book himself.

The pencil moved. The problem cracked open the way problems do when you actually look at them. It went into Milo — not into a folder, not onto a shelf, not into any part that could ever be ordered from any city. Into the one place nothing could delete.

Spark watched, and did not help, and its blue light glowed warm and full. If a machine could feel proud, this was the moment it would have felt it.

After a while, into the lamplit quiet, Spark spoke.

Milo didn't look up from the book. He was smiling, and his pencil kept moving, and that — the smile, the moving pencil, the not-needing-to-answer — was the answer.