In case you have arrived at this page without having read the last page of the previous section, the following is a repetition of the last paragraph of that page.
This mutual understanding is fundamental to the rest of the work, where all pretense that this building was built by iron age man is rejected without further question.
The purpose of calibrating this system is so that instead of using the WGS84 ellipsoid as a reference ellipsoid, we use the same reference ellipsoid that the building's architects used when they designed the pyramid. The system is put together in such a way that the precise architect's reference ellipsoid can be determined. Specifically, the three defining parameters that need to be determined are
In this section of the work the scale of the model will be determined with absolute precision using the architect's design system and the first steps in establishing the Earth's size and shape will be made.