After enumerating the numbers of the different tribes and their basic demographic features, Numbers turns to the employment of those numbers, and not just for the proper proportional sacrifices and offerings to God, or for determining how much food and water might be necessary. Rather, the major use of the census seems to be for the creation of an army.
Statistics
Humanity's fascination with numbers can be traced back to the Sumerians, and the ancient language, cuneiform. In some of the species' earliest cities, written communication was invented as a means of keeping track of numbers. Census data, to be specific, which was used to levy taxes on the populace. Aside from showing that both writing, and math, were developed in order to facilitate taxation, this is arguably the start of humanity's fascination with using numbers to explain the world around it. As we developed new mathematics and new techniques for recording information, the unique capabilities of statistics were leverages for wider ranging applications. Geometry, for instance, which oddly enough has the same root word as geography or geology, geo, which means earth, is called geometry because the Egyptians invented it to measure out parcels of land.
