The difference between these prevailing theories of cultural evolution and Darwinian theory cannot be overstated: the orthogeneticists argued that all societies progress through the same stages in the same sequence.
这些盛行的文化演化理论与达尔文的理论之间的差異不能被夸大：这些理论家主张，所有社会的进步都歷經以一套相同次序中的幾個相同阶段。