Who had signed my name?
My father, Caleb Ellis, used to tell me that broken machines were honest.
People could lie about a problem.
They could pretend nothing was wrong.
They could blame somebody else.
But a machine would eventually reveal the truth through its behavior.
Dad was a biomedical equipment technician at a regional hospital outside Detroit. He worked long hours maintaining infusion pumps, patient monitors, cooling equipment, portable medical devices, and other machines that most people never thought about until something went wrong.
He wasn't a physician.
He wasn't a famous inventor.
He didn't own a laboratory.
He was simply the man nurses called when a machine failed and everyone needed it working again.
He took that responsibility seriously.
My earliest memories of him involved old work shirts, carefully organized tools, and the quiet concentration that settled over his face whenever he examined a problem.
When I was six, he brought home a broken desk fan.
It wasn't useful anymore.
The motor had failed, and the manufacturer had discontinued the necessary replacement part.
Dad cleaned it, removed the damaged components, and showed me the harmless pieces one by one.
I sat beside him at the kitchen table.
โWhat's wrong with it?โ
He smiled.
โToo much heat.โ
I frowned.
โFans make things cold.โ
He laughed.
โFans move air. The motor still gets warm.โ
I stared at the little copper coils.
โThen why doesn't it cool itself?โ
Dad's smile changed.
He looked toward me for a long moment.
Then said, โThat's a very good question.โ
I didn't know it then, but I would spend much of my adult life trying to answer variations of that question.