In this blog post, we’ll focus on the debate “Is rape an adaptation?” discussed in ‘Darwin’s Table’, examining the concepts of adaptation and by-products, as well as the arguments presented by both sides and our perspective on them.

The Concepts of Adaptation and Byproduct

‘Darwin’s Table’ is a book structured as a debate between the Dawkins team and the Gould team on the topic, “Is rape truly an adaptation?” To understand this issue, we must first distinguish between the key concepts of adaptation and byproduct. An adaptation refers to a trait that has evolved so that an organism’s form or function is well-suited to its environment, thereby conferring a survival or reproductive advantage on the individual. In contrast, a byproduct refers to a trait that did not undergo natural selection to perform a specific function but arose incidentally during the process of other adaptations.

Arguments of the Dawkins and Gould Teams

The Dawkins team argues that rape is an adaptive behavior that increases the reproductive success of males who are at a disadvantage in mating. They explain that rape is not merely an act of violence but is fundamentally a sexual behavior stemming from sexual desire. Furthermore, Steven Pinker argued that this issue should be analyzed from a biological perspective rather than approached as a matter of moral values.
In contrast, the Gould team argues that rape is not an adaptation but a byproduct of human behavior. They criticized the data presented by Thornhill regarding the age of rape victims and the severity of their injuries, claiming it lacked objectivity. They also argued that it is unreasonable to directly apply the reproductive organs of primates to humans. Gould presented a key counterargument, noting that cases such as male-on-male rape, incest, and child rape are difficult to explain as reproductive adaptations.

Professor Jang Dae-ik’s View

Professor Jang Dae-ik, the author of this book, explains rape from the perspective of adaptation. He uses obesity as an example to illustrate this point. During the hunter-gatherer era, high-calorie foods were extremely scarce, so a physiological system that efficiently stored energy as fat was an adaptation advantageous for survival and reproduction. However, this adaptation still operates even in environments like today’s, where high-calorie foods are readily available. This is because biological evolution cannot immediately keep pace with rapid environmental changes. Obesity can be explained as a result of these environmental changes.
Professor Jang Dae-ik explains that rape is a similar case. Even if rape were an adaptation formed during the evolutionary process, that does not justify it in modern society. Humans have the ability to choose their own actions, and since rape is a serious crime that causes severe harm to others, it must be avoided at all costs. Furthermore, just as many people strive to avoid obesity, most men do not choose to commit rape. The crucial point is that whether a behavior or ability is an evolutionary adaptation and whether it is ethically right are two separate issues. Natural selection does not operate according to moral standards, and ethical judgments are made within the value systems of human society.

The View That Rape Is an Adaptation

On this topic, I believe that rape is an adaptation. The reason is that rape may have evolved in a way that increases men’s chances of reproductive success.
However, while some past studies in evolutionary psychology have raised this possibility, no definitive scientific consensus has been reached to date to prove it. Furthermore, the claim that the probability of pregnancy following rape or certain hormonal changes directly prove that rape is an adaptation selected by natural selection is not currently accepted as an established conclusion in the academic community. Therefore, it is difficult to conclusively assert that rape is an adaptation based solely on these research findings.

Counterarguments and Perspectives

One criticism of the above argument is that it is difficult to view rape as actually increasing reproductive success.
In modern society, rape victims have access to various medical options, such as emergency contraception or abortion, and this fact may conflict with the claim that rape was selected by natural selection to increase reproductive success. Furthermore, critics argue that this explanation alone cannot adequately account for cases such as child rape or same-sex rape.
In response to this, one can point to the fact that the concept of “adaptation” was formed over the course of humanity’s long evolutionary history. In other words, the argument is that since modern medical technology and social institutions have emerged only very recently, they must be distinguished from factors that explain the evolutionary process itself. Furthermore, cases such as same-sex rape or child rape can be interpreted as special cases that are difficult to explain solely through general reproductive strategies.
Another counterargument suggests that rape did not arise to increase reproductive success, but rather that the possibility of pregnancy simply arises incidentally during the process of satisfying sexual desire.
In response to this, some studies have raised the possibility that physiological differences exist between rape and ordinary sexual intercourse. Furthermore, there have been reports of behaviors or physical characteristics related to forced mating in certain animals. However, there are significant limitations to directly applying these research findings to humans, and there are currently diverse viewpoints on this matter within the academic community.

The Applicability of Animal Examples

In response to the above argument, counterarguments have been raised stating that examples from certain animals cannot be directly applied to humans.
In response to this, one could argue that humans are also a product of evolution and share a common ancestor with other animals. Indeed, forced mating has been observed in some animal species. However, a cautious approach is necessary when using these examples alone to directly explain or generalize human behavior, as human behavior must be considered in light of not only biological factors but also sociocultural factors.

Explanations for Differences Between Men and Women

If rape is an adaptation and a behavior related to species preservation, one might ask why men commit rape at a much higher rate than women.
In response to this, there is an evolutionary psychological perspective that explains this by pointing out that the biological costs women bear during pregnancy, childbirth, and child-rearing are much greater than those borne by men. Pregnancy and childbirth place a significant physical burden on women, and the subsequent process of child-rearing also requires a great deal of time and energy. This explanation suggests that, due to these differences, the reproductive strategies of men and women may have evolved differently. However, this explanation is merely one evolutionary psychological hypothesis and is not accepted as a theory that solely accounts for the causes of sexual crimes in modern society.
We have now examined the topic, “Is rape an adaptation?” I have introduced the view that rape may have evolved to increase men’s reproductive success and reviewed both the evidence supporting this view and the counterarguments against it. The most important point in this debate is that evolutionary explanations and ethical evaluations are issues on different planes. Studying how a behavior was shaped during the evolutionary process and determining whether that behavior is socially justifiable are separate issues; regardless of any evolutionary explanation, rape is a grave crime that can never be tolerated in modern society.