Ole J. Bryn, an architect and associate professor … of Architecture and Fine Art [at the Norwegian University of Science and Technology] believes that the Egyptians invented the modern building grid, by separating the structure’s measuring system from the physical building itself, thus introducing tolerance, as it is called in today’s engineering and architectural professions.
Bryn has studied the plans from the thirty oldest Egyptian pyramids, and discovered a precision system that made it possible for the Egyptians to reach the pyramid’s last and highest point, the apex point, with an impressive degree of accuracy. By exploring and making a plan of the pyramid it is possible to prepare modern project documentation of not just one, but all pyramids from any given period.
Source: Science Daily, Ancient Egypt’s Pyramids: Norwegian Researcher Unlocks Construction Secrets (Sept. 24, 2010).
An alternative theory:
Source: Wiley Miller, Cats and Pyramids, Non Sequitur (Sept. 29, 2010).