Sister publication EDN presents an engineering who-dunnit in its latest Tales from the Cube, involving two engineers who were asked to investigate why the company's telephone switches were failing to switch activity from one machine to another. As hardware engineer Pierre Renaud relates:
"Everyone thought the culprit was a bad batch of DRAM chips because the older boards had been in the field for years, and this problem had never occurred before. So, my boss assigned me, the hardware guy, to team up with my software buddy to see if we could diagnose the problem....Although this event happened years ago, its lesson still remains as one of the more important laws of the art of debugging: Bugs don’t disappear with time."
Read about their full investigation here.
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