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13

Easy Exercises for the Reader

“What one man can invent, another can discover.”

—SHERLOCK HOLMES, THE ADVENTURE OF THE DANCING MEN

Can you name the debugging rules that are at work or being violated in these debugging episodes? (Hint: They’re in italics.) The answers are noted by superscript numbers keyed to the list at the end of each story.

A Light Vacuuming Job

This is the house-wiring debugging story that I alluded to earlier. It was truly strange, and it gave me an opportunity to get back at my old man for his “when all else fails, read the instructions” comment.

While preparing for a visit from my father to the aforementioned ninety-year-old house in New Hampshire, my wife plugged a vacuum cleaner into a wall socket in the ...

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