The Paper Plane Test

The canteen on the building site smelled of soup and wet boots. At noon it was full of loud workers. They wore orange jackets and dusty boots.

Gabi sat alone at the back table. In front of her stood a stack of paper planes. There were twenty, and she folded them herself that morning.

Salma, the site manager, walked over with a tray. She looked at the planes and raised one eyebrow. "Is it a hobby?"

"It is a test," Gabi said. "Sit down. I need your help."

Salma sat. Outside the window, a small gray drone rose from the yard. It carried a box of screws up to the third floor. It made a soft buzzing sound, like a big fly.

"The delivery drones are good," Salma said. "But they have no safe place to land. Tomorrow, the company sends the new ones. We need a landing pad for them by tonight."

"I know," Gabi said. "I am the one who must choose where it goes."

Gabi was the site's drone chief. Last year, she was a crane driver. Then the company brought in flying machines. They asked her to learn them. She learned fast, and she liked the work.

"There are two places," she said. She put two fingers on the table. "The roof of the canteen is close to the tower. The drones save four minutes on each trip."

"That is a lot of time," Salma said.

"But the roof is above our heads. A drone can fall here." Gabi pointed at the ceiling. "The other place is the gravel yard behind the fence. It is safe, but far. We lose time on every trip."

Salma ate some soup and thought. "Both are okay. Take the roof. Time matters."

"Or take the yard. Safety is safety." Gabi sighed. "That is the problem. Both are okay. I cannot see a wrong choice."

"So how do the planes help?"

"Air is invisible," Gabi said. "But a paper plane shows you where it goes. I want to see how the air moves above each place."

Salma smiled. "That is clever. Or very silly."

"We will see," Gabi said.

They took the planes. They went up the stairs to the canteen roof. The wind was calm there, with a soft push from the left. Behind them, the crane turned slowly against the sky.

Gabi stood at the edge. She held the first plane high. "Watch where it goes."

She threw it. The plane flew straight for a few seconds. Then it turned in a tight circle. It fell back to the roof.

"One," Salma counted.

Gabi threw the second one. It also turned. The third dropped like a stone. The fourth flew upward, then stopped and fell back. By the tenth plane, Salma stopped counting out loud.

"The roof is a mess," Gabi said. "Look. The air bends around the canteen wall. It goes up, then down, then around. A drone shakes."

"But the planes are light. Drones are heavy."

"Drones are heavy," Gabi agreed. "But they have small, quick wings. They feel the air very strongly. It is the same problem, only bigger."

Salma looked at the fallen planes. Four lay near the edge. One hung from a pipe. "So the roof is a bad place."

"A bad place for a landing, yes. A big wall can fix it. That costs money and time." Gabi picked up the planes, one by one. "Now the yard."

They went down again. The yard was a wide, flat square of gray gravel. It lay behind the metal fence. There was nothing tall near it except a pile of pipes.

Gabi walked to the middle. She held up the first plane from the second batch.

It flew like a bird. It went straight, slow, and long. It crossed the whole yard and landed softly near the fence.

"Oh," Salma said.

The second plane did the same. And the third. Gabi threw ten planes, and nine of them flew smoothly. One hit the pile of pipes. That was her own bad throw.

"The yard is calm," Gabi said. "The air is clean here."

"But it is far from the tower."

"Yes. It is four minutes slower on every trip." Gabi picked up a plane. "But it never shakes, never falls, and never lands on your lunch. And we can move the pipes."

Salma was silent for a while. She looked at the roof. She looked at the yard. Then she looked at the tiny plane.

"You had the answer before you came here," she said. "Tell me the truth."

"No." Gabi shook her head. "I had two good choices. I wanted to feel the difference, not just count it. Now I know why I choose the yard. I do not just guess."

Salma took out her phone and typed a message to the office. Then she wrote a second message to the pipe crew. "The yard it is. I will tell the pipe team to move their stack."

"Thank you."

"And I will tell the cook his roof is safe." Salma grinned. "He was afraid of the drones."

They walked slowly back to the canteen. The afternoon sun was warm on the gravel. One last plane lay in the yard. Its nose was in the stones.

Gabi picked it up. She looked at it for a moment. Then she put it in her pocket.

Salma opened the canteen door. The smell of soup came out. "One more thing," she said. "The new drones are twice as big. Does the yard work for them too?"