It was random. I was going to make copies of all the notes and whoever responded first would be murdered. But the printer malfunctioned. And I only had one usable copy.

I didn't have enough time to sort things out. I just threw the random notes on the doors. Honestly, I even forgot which person got the readable one.

The machine was built for a tall and a small person. That's why there were two gears shot out at different heights.