When I hear about a computer bug it makes me think of the book "The Innovators" by Walter Isaacson when talking about Grace Hopper's time at Harvard working on the Mark II computer.

One night the machine conked out, and the crew began looking for the problem. They found a moth with a wingspan of four inches that had gotten smashed in one of the electromechanical relays. It was retrieved and pasted into the log book with Scotch tape. "Panel F (moth) in relay," the entry noted, "First actual case of a bug being found."
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