Were power tools used to build the great pyramids? The great pyramid of Giza was built with the precision of a machine, and Christopher Dunn explains that it therefore must have the function of a machine. Combining his extensive background as a master craftsman in high-level aerospace manufacturing with his years of research on the Giza plateau, he brings forward new insights into the construction and function of the great pyramid. What comes to light is the nature of the tools used to carve and move stones, something that could only have been done with massive power tools. But where did the power come from?