A skeptical technician unknowingly produced a control group confirming the toxic exposure finding

Evidence

The doctor who had actually administered the blink reflex tests, an expert in electromyography, had known nothing about the history of the Woburn families. This doctor had been concerned about the number of slow blink reflexes she was seeing among this group. She had wondered about the accuracy of her TECA-4 machine. To test the machine, she’d rounded up seven technicians from the hospital corridors. Their blink reflexes had all been textbook-normal. — , Harr Jonathan - A Civil Action, 1112

Categorization

• CANDY: A scientist worried her machine was broken, tested it on seven random technicians, and accidentally proved the finding real.
• STORYSTEM: A skeptical lab tech who disbelieves the results, informally tests her equipment on strangers, and becomes the unwitting witness whose data seals the case.