" Rudolph Gantenbrink's important discovery [of a door with metallic handles found with a robot inside a shaft in the Great Pyramid] has forced many Egyptologists to finally accept that their theories are flawed. This is an interesting development. Academic mores normally dictate that when a theory contains flaws, or unsubstantiated data that supports critical elements on which the theory is built, the entire theory must either be thrown out or revised. Instead of the tomb theory being dismissed, however, Gantenbrink himself was dismissed from the project. He discovered the "door" on March 22, 1993. A week later, he was told to pack up his robot and leave Egypt. Gantenbrink has the technology to go beyond the so-called door but, presumably because of political reasons, has been refused permission to resume his research in Egypt. Gantenbrink, with an engineer's typical pragmatism, stated, 'I take an absolute neutral position. It is a scientific process, and there is no need whatsoever to answer questions with speculation when these questions could be answered much more easily by continuing the research. Yet because of a stupid feud between what I call believers and non-believers, I am condemned as someone who is speculating. But I am not. I am just stating the facts. We have a device [ultrasonic] that would discover if there is a cavity behind the slab. It is nonsensical to make theories when we have the tools to discover the facts. "

― Christopher Dunn , The Giza Power Plant: Technologies of Ancient Egypt