The prescertain of population on available resources is the key to understanding history; consequently, any historical writing those gets no cognizance of demographic facts is intrinsically flawed.

• 人们对于可利用资料的压力是明了古代事件的关键，所以，任何的古代事件书面表达假如么有认识到人们访问量情况学的事实都是本质错误的。