Historically, the ancient Egyptians constructed pyramids some 5000 years ago. There is no written evidence that they built a schedule to construct the pyramids. However, let us imagine for a minute that there was no schedule and the people loved or forced to love the Pharos. Everybody committed himself to contribute to the construction of the holly tomb. Then everyone would go to a nearby place of good stony mountain and would cut a cube of stone and go ahead and place it somewhere in the building. If that happened, would the Great Pyramid look like what it is now? The obvious answer is no.
Another scenario if we assume that there was a decree from the Pharos that everybody should cut a cube with given dimensions and brings it to the construction site. Would the site fit all of these cubes ready for the installation?
Archaeologists believe that the Great Pyramid was built by tens of thousands of skilled workers who camped near the pyramids and worked for a salary or as a form of paying taxes until the construction was completed. The worker's cemeteries were discovered in 1990s. The labor was organized into some kind of organization structures consisting of two gangs of 100,000 men, divided into five zaa or phyle of 20,000 men each, which may have been further divided according to the skills of the workers.
There is a belief that there was a project-based organization that yielded project teams. A very large project team that is divided into sub-teams responsible for executing specific sub-projects within the big project. Also, there is no doubt that there was a plan or schedule that states the location and time of cutting every single piece of stone and there was an estimation of the transportation time in order for the right cube to arrive in the right time.
Then it is safely concluded that the person managed the construction of the Pyramid generated a resource-loaded schedule for building the Pyramids. His schedule does not necessarily look like the schedules currently known but it should be a perfect one to avoid any mess in the construction site
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