One autumn afternoon, several years after the International first returned to the field, a farmer arrived with his grandson while Jonah was checking a repaired casting. The boy was younger than Jonah had been that January, with hair flattened by a cap and a serious expression that reminded Silas of someone he knew. While the adults discussed the tractor, the child wandered toward the wall of broken engine blocks. He stood there for a long time, trying to understand why a repair shop would preserve so much damaged machinery.
"Mister, why don't you throw those away?" the boy finally asked. Jonah set down the tool he was holding and walked over to him. Instead of answering immediately, he pointed to two apparently similar cracks and asked whether the boy could see any difference between them. The child leaned closer, studied the rough surfaces, and slowly identified a faint branch that he had missed at first.
"That's one reason," Jonah said. The boy frowned, and Jonah explained that every casting on the wall showed something about how a machine had been stressed, how it had failed, or why a repair might or might not be safe. He told him that some pieces had cost nothing to bring home but had saved him from expensive mistakes on working equipment. The boy looked toward the shop floor, where the farmer's tractor part was being prepared for inspection, and began to understand why the broken things remained.
"Were they worth anything when you got them?" the child asked. Jonah smiled and said that to the salvage dealer they had mostly been worth the price of scrap iron. The boy considered this, then asked whether the salvage dealer had been wrong. Jonah said Earl had been right about what the metal would bring by the pound, but that price did not measure what somebody could learn from studying it.
Silas was sitting near the workbench, listening. His eyesight had weakened enough that he needed stronger glasses to read the small print in the old manuals, and the tremor in his hands had grown more noticeable. But when the younger boy asked why some engine blocks had white paint across their cracks, Silas answered before Jonah could. "Those are the ones that taught us when not to try," he said, and his grandson smiled because he could not have put it better himself.