Pavel found a chair in the first room and sat down.
“Does the chair count?” the ceiling asked.
“No,” he said.
QUESTION USED, said the ceiling. The door shut.
Through the window, Sera watched him find the large red reset button. Her investor hated that button. He said it spoiled the room’s beauty.
He had never tried to get out.
Sera had invited Pavel to her lab because she needed someone to test a strange result. Her team had measured a small space with the air removed—a vacuum. When they compared the readings from different points of view, the numbers did not agree as they should.
Perhaps their clocks were wrong. Perhaps their sums were wrong. Perhaps empty space held something they had missed.
Her investor had chosen the third answer. He wanted to announce a new source of energy. Sera wanted him to wait until they knew what they had found.
Pavel’s job was to check experiments for mistakes. He came out through the reset door, carrying his notebook.
“You said one question per room,” he told her. “I thought you meant one question about science.”
“The program can’t tell the difference.”
“Good. Something here knows its limits.”
The maze was Sera’s private project. The maze was made of three real rooms lined with screens. Its program, Daedalus, could change what appeared on those screens and answer questions about saved measurements. It could not change those measurements or take new ones. She had built it outside the lab’s main network because her employer would not allow such a system there.
There were three rooms. Each showed the same experiment from a different measuring viewpoint. Sera called a viewpoint a frame. On every wall, a short guide explained that room’s frame and the clock used for its readings.
The rooms also showed a file number. Pavel could compare it with the lab’s saved record to check that no samples had been changed.
Daedalus accepted one question in each room. Then it let Pavel move to the next. He could reset and start again if he wasted a question. It would not carry an earlier answer forward unless Pavel brought that answer himself.
“Why make it so awkward?” he asked.
“Because I want you to check each room. I don’t want the program guessing what answer will please you.”
Pavel tried the maze.
In the first room, he asked how much the reading differed from what the team had expected. The room gave him a small number.
In the second, he asked how to remove that difference. It gave him a clock correction.
In the third, he applied the correction. The difference became larger.
“Your program is making a joke,” he said when he came out.
“Show me where.”
He laid his questions on the desk. In the first, he had named the lab’s clock. In the second, he had said only “the same time.” In the third, he had left out the clock altogether.
The rooms had answered different questions. He had treated them as one.
Pavel drew a line through his notes. Sera gave him a fresh sheet rather than telling him what to write.
At noon, Ina arrived with a recorder under her arm.
She had once worked for Sera. They had stopped speaking after Sera refused to let her copy the odd readings for her student paper. Ina thought a fault in the lab’s clock could explain them. Sera feared someone would claim a discovery before checking that fault.
“I did the clock test at another lab,” Ina said. “You told me to bring evidence.”
Sera looked at the recorder. “You could have called.”
“You could have answered.”
Pavel moved his notebook to make space.
Ina’s test showed how far the lab clock might be drifting. The pattern matched part of the strange result.
Sera’s phone rang. The investor wanted Pavel to sign a statement about an energy breakthrough.
Pavel shook his head.
“We’ve found a possible clock error,” Sera said into the phone. “We haven’t found a source of energy.”
The investor reminded her who had paid for the work.
“You paid for measurements,” she said. “We’re checking what they mean.”
He ended the call.
Ina’s test was still outside the maze. Only Sera had the key that could add a file to its protected record. Adding it would leave the old samples in place, alongside the new test. Everyone would be able to see who had supplied each part.
“If your test explains only half of it,” Sera told Ina, “you can’t claim you’ve solved it.”
“Neither can you.”
Pavel turned his empty cup on its side. “That sounds like an agreement I can check.”
Sera used her key. The walls went dark for a moment. When they lit again, Ina’s name stood beside hers.
Together they wrote one question. It named the sample, the clock, the time being measured, and the viewpoint. They made sure every word meant the same thing in all three rooms.
Pavel reset the maze. He asked that exact question in each room, without using an answer from one to shape the next.
This time they could compare the results fairly. Allowing for Ina’s clock error removed part of the difference. A smaller difference remained.
Ina checked her sums twice. Pavel checked the file numbers against the saved measurements.
“Still there,” Sera said.
“Or still a mistake we haven’t found,” Pavel replied.
The three doors opened onto a plain table. Sera had written that rule herself: ask a fair, fully stated question in every room, and the maze lets you through. It would have opened even if the strange result had vanished.
On the table lay a blank plan for the next experiment.
Ina sat first. “My lab. A new clock. Repeat the whole measurement.”
Pavel wrote down how he would check the new samples without knowing which result Sera hoped to get.
Sera reached for the space marked WHO HOLDS THE RESULTS.
Ina put a hand beside it. “All three of us.”
Sera thought of the investor’s call. Keeping the files to herself had not kept him from making claims. It had kept Ina from testing them.
She wrote three names.
Pavel sat in the last room’s chair. Nothing asked him a question. Ina and Sera began arguing over which clock to use. After a while he set his cup upright and joined them.
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