And most people are heterosexual There's a considerable amount that varies cross-culturally of people who are bisexual But the real puzzle is exclusive homosexuality ? So, why?

多数人都是异性恋的,而且不同文化背景下…,还有很多双性恋者,但真正的难题在于绝对同性恋,为什么呢？

耶鲁公开课 - 心理学导论课程节选

It's a question of saying, "How on earth would you ever have the concept 'heterosexual' if you didn't have the concept 'homosexual' in place?" Right? The absolute interdependency of these concepts is, again, central to her argument and to her understanding of things.

这就像是说，如果首先没有“同性恋“这个概念,又怎么会有“异性恋“这个概念呢’,是吧，这些概念的绝对依赖性，是她论点的中心，同时也是她理解事物的中心轴。

耶鲁公开课 - 文学理论导论课程节选