His theory is based on the assertion that through evolutionary history, men have always been "mildly polygamous".

金博士的这番理论建立在人类进化史之上：人类一直以来都倾向拥有多个伴侣。

That has changed today, however, and Dr Kanazawa explained that entering a sexually exclusive relationship is an "evolutionarily novel" development for them.

然而如今这种倾向有所改变。金博士解释说，只忠于一个伴侣的情况从进化的角度来说是比较“新奇”的。

According to his theory, intelligent people are more likely to adopt what in evolutionary terms are new practices--to become "more evolved".

依他所看，比较聪明的人更加容易顺应进化趋势，接受新式的两性关系模式。

Therefore, in the case of fidelity, men who cannot adapt and end up succumbing to temptation and cheating are likely to be more stupid.

所以说，如果男人不够忠诚，不能调节自身并抵制诱惑，那么他有可能是因为智商比较低。