Both supporters and critics of the theory hold to an intrinsic opposition between human and "natural" factors, such as climate, famine, and disease, influencing demography.
这一理论的支持者和批评者都坚持认为，影响人口结构的人为因素和诸如气候、饥荒和疾病等"自然"因素之间存在着内在的对立。