Introduction

Once upon a time, there was a major technical problem at a nuclear power plant. This malfunction was slowing energy generation and reducing the efficiency of the entire operation.

As much as they tried, the plant’s engineers could not identify and solve the problem. So they brought in one of the nation’s top consultants on nuclear power plant construction and engineering to see whether he could determine what was wrong. The consultant arrived, put on a white coat, took his clipboard, and went to work. For the next two days, he walked around, studying the hundreds of dials and gauges in the control room, taking notes, and making calculations.

At the end of the second day, he took a black felt marker out of his pocket, climbed up on ...

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