It's like a classification of human generational development. Based on what drive us to build empires. It's not religious. በጉልበት, በአዕምሮ, በሆድ, በብልት then it repeat again there are things like religions, technology, natural disasters that may change this patter all together. But if we think human being with animalistic behavior that use critical thinking as a way of survival this how the generation pattern goes. I don't have all the information & kind of hard to prove this theory.