哲學家S. E. Marshall論證「性應該是相互的」,並且由此推論 「性交易(賣淫)因為不是相互的性,故而是錯的」。本文則從理論與 例證反駁了 Marshall的論證,並且釐清了「相互性」或「互惠性」 的意義。
Philosopher S. E. Marshall argues that sex should be mutual, and thus sex trade is wrong because its mode of sex generally lacks mutuality. This essay analyzes and refutes Marshall’s argument by using various examples and showing mutuality sometimes may be incompatible with reciprocity.