Chapter 32 Scene 30

The young male teacher is reading the test paper, and his two daughters jump briskly to kiss the father.The two daughters are 6 years old and the other 7 years old.After they had said good night to their father, they were driven behind her by the man's mate like two lively lambs.One daughter said goodnight to her father in her own language, the other in her mother's.Usually a man's family speaks his mother tongue most of the time, but when they are particularly tender or angry, they sometimes blurt out and change to their mother's mother tongue.The spouse returns to the man after putting the child to bed.He put away the papers, turned on the TV, and walked over to the couch and sat down next to his spouse.The woman put her legs on the man's lap, and the two sat side by side, caressing each other's hands and feet boredly, and watching the TV.The man watched her surreptitiously from the side of his spouse.All day long, fear had gripped him, and he felt his stomach churn.How should he tell her, he is about to collapse.

"I'm pregnant, and the baby is yours." During recess this morning, someone handed him a scrawled note: "My dad said, you have to 'pay' the money, or else , you have to 'pay' the responsibility." The girl who wrote this note was only 15 years old, and compared with most of the students in the class, she was considered a relatively low-quality student.The girl matures precociously, and is brought up very strictly, but despite this, she has an appearance and a demeanor that attracts men as long as she keeps her mouth shut.It was a warm evening in spring, and the girl asked the man to give her a ride home after school.Men teach foreign languages ​​as their main subject at school and also serve as physical education teachers.It was really hot that evening, so he was driving home without changing his shorts.

When a girl asks for a ride, he should say "no" to her; when the girl starts touching his thigh in the car, he should tell her to stop; when the girl takes off her panties, he should tell her to get out of the car immediately That's right.But he didn't do that at all.Instead, he drove into the parking lot in front of an abandoned warehouse and climbed into the back of the car.Not only that, but he made the girl take off his shorts and climb on top of him.Looking back now, he remembered how skilled the girl was when she helped him take off his clothes and fondled his genitals!The man began to suspect that it must not be the first time she did such a thing.He also suspects that he is not the father of the child - assuming she is actually pregnant.I'm afraid she's done the same thing to other men, to other teachers?She probably wrote the same letters to those people, the man thought.Perhaps, her threatening letter was not serious, and if he ignored her, nothing would happen.However, it is also possible that their father and daughter will come for real, then he not only has to pay, but also has to take responsibility.

Fear constantly devoured the man's stomach.He is not yet 30 years old, and the current financial situation is simply terrible.His tuition fees for four years of college, as well as the cost of studying abroad and receiving teacher training, these expenses have not yet been balanced.Moreover, he had to send money abroad to support his other child.That child was with another woman when he was an exchange student abroad before he met his current spouse.Although his spouse also started working outside after their youngest daughter went to school, they are still deeply in debt.He could never afford the money demanded in the letter.If the girl's threats were serious, his only recourse was to deny everything, not to admit that he had ever had anything to do with her.His only wish is that no one sees him with a girl.

To be honest, it wasn't the girl's letter to him that worried him.If it were to be questioned whether he had cheated on her, he had nothing to worry about, either from an economic or legal point of view.As for his spouse's reaction, he need not worry too much.There is a relaxed relationship between them. Due to the influence of her growth environment, her attitude towards "sex" is more open than his.She knew that the man had a child in her home country, even though they were not doing well financially, but she never said she wanted him to stop providing financial assistance to the mother and son.She also knew that he would not be 100% loyal to his spouse.Although she didn't quite know what he was doing outside.So far, the man has had three affairs. During his first affair, due to bad luck and negligence, his spouse found out what he was doing.But she eventually forgave him.And less than a month after the incident, they rebuilt their relationship and returned to their previous relationship.The man even felt that his spouse would forgive him for his affairs with the girl this time.Especially if he denies all the facts.

No, the reason his stomach was churning wasn't because he was afraid his spouse would find out he was flirting with women.His stomach ache was from the fear that his spouse would find out that he was still out there flirting with men.The man's mind was in turmoil.In self-defense, he intends to deny what the girl wrote on the note.But he was afraid that doing so would irritate someone who knew he had another, rather active, sex life.He was even more afraid that those people would spread rumors everywhere.Even if he wasn't involved in serious legal issues, even if his spouse had always been understanding and considerate about "sex," he couldn't believe she would still be on his side if she knew the whole truth.

A man's homosexuality goes back as far as he can remember.At that time, his uncle often came to be his nanny. At the age of 6, uncle climbed naked on his bed for the first time to hug him and told him that the game they played together was "a secret between two people" and that his mother "wouldn't know" about it , and the game would make his mother "very angry".The man liked the games his uncle played with him.He loved the way his uncle smelled, and how he felt when he was touched; and the way they made each other's cocks bigger, and he helped his uncle get his cum, he loved it all.The first time his uncle penetrated him was when he was 10 years old, and the first time he penetrated his uncle's body was when he was 12 years old.

His first gay partner was his cousin who was the same age as him.They were both 11 years old at the time, and once, while his parents were out shopping, he was playing in the bedroom with his cousin.He first persuaded his cousin to take off his clothes to play wrestling.Within a few minutes, both of them had their penis erect, and it took him less than an hour to teach his cousin some of the techniques he had learned from his uncle.Later, by the time they were 13, both were able to ejaculate, and the man and his cousin saw each other at least once a week.Besides masturbating each other until they ejaculate, they also have anal sex.

Also in the same year, he had his first experience of having sex with a girl.The young girl was his age, and the two had always been neighbors, having played together since childhood.He first persuaded the girls to come and play the game of "comparing each other's abilities" with him.Indeed, he really has a lot of skills that he can "show" to her.His uncle and cousin practiced with him for many years, which gave him all kinds of knowledge and confidence about the body, as well as confidence in touch, which even a man twice his age did not have.The girl came to him every week, asking him to touch and stimulate her.The girl pushes him a little further each time.In the end, she let him use not only her hands but her mouth and penis, taking the time to caress and stimulate her genitals and around the anus.His ingenious technique made the girl feel the thrill of her first orgasm.The girl then had orgasms that got stronger and stronger each week for the next few weeks.This is when the girl will ask him to give her more of the same orgasm, every chance she gets. After 3 months, he finally convinced the girl that "she will definitely like anal sex, and anal sex will not make her pregnant".So, the two of them tried it a few times, and she really liked it.Within a year, the girl said she didn't want to just have anal sex, she asked him to penetrate her vagina as well.The boy was 14 years old at the time, and he had completed a complete set of sex education courses.

Four years later, he saw the gay world in college.Countless evenings were spent in gay bars and clubs.Later, he lived with a boy for a year in what seemed like a monogamous relationship.At the same time, however, they are often looking for affairs of their own.For the most part, they're looking for men, but sometimes they're looking for women.He was never short of women, and many women told him he was so much better than their non-gay lovers his age. Later, because he planned to teach foreign languages ​​at school, he became an exchange student and went abroad to study foreign languages.At that time, the person who lived next door to his apartment happened to be a woman.The two became a couple within a few days, and the man later found a local gay group.He had been with the woman less than 3 months before she became pregnant.At that time the man had not yet had sex with his later long-term partner.But toward the end of the year, his future spouse also became pregnant.During this period, the man has relationships with two women at the same time, one woman lives with him, and the other woman has an affair with him. Even so, he still often secretly finds gay partners to have fun without telling both women.However, most of his sexual partners abroad are women.

The man later returned to his old university to complete his final year, at which point he rejoined the gay scene.He also kept in touch with the mother of his two children and sent the little money he could earn to each of the two women.Not long after, he graduated and moved to another city in order to obtain the degree necessary to be a teacher.Not long after the man moved in, his current spouse showed up at his door with their five-month-old daughter.The woman just moved in and lived with him ever since.The man still sometimes goes to the gay bars he hangs out looking for "one flings," but his spouse never knows about it and, as far as he knows, never suspects his bisexuality. Six years ago, under the shadow of mass unemployment, a man found a job as a teacher in a small, simple and backward town.He secretly swore to abstain from any sexual activity that would damage his career, or make his financial situation worse.He had lived in such self-control for three years.But in the fourth year, he still couldn't resist the charm of the two trainee female teachers.His affair with the first woman was discovered by his spouse, but his relationship with the second woman was kept a secret.Both of those affairs lasted only a month.Then, a year ago, he was tentatively signaled by a male staff member at the school, and he responded, and a homosexual relationship began between them that has continued to this day. The men would go to the male employee's apartment at least once a week, and they would tell everyone that "the two were playing pelota together", but in reality, the two were having sex together.The man finds it incredible that his new lover of the same sex resembles his first woman abroad.The woman who became pregnant within a few months of being with him was very similar to his new lover in terms of temperament, behavior, and reaction.In addition to making love together, the man and his new lover sometimes visit gay bars hand in hand to find new male partners; sometimes they also explore the streets or public toilets together, hoping to find young male prostitutes.But in order not to be discovered by acquaintances, they usually drive 30 minutes to the nearest big city to have fun. Now, men are worrying about a troublesome thing.The trouble started six months ago.At that time, he and his male companion went to the big city to find child prostitutes.They came across two soliciting boys who happened to be 13 years old at the school where he taught.The incident disturbed them all.Throughout the weekend, just thinking about what might happen makes men feel like hell.The man didn't feel relieved until he got back to school on Monday and the two boys came to him.Because the two boys told him that as long as he didn't say it, they wouldn't tell anyone about it. If his male partner - another teacher - hadn't taken the boys to his apartment later and paid them for his sexual favors, the gentleman's agreement between them and the boys would have survived of.When the man went to his lover's place one evening, the two boys were there.This foursome game is so tempting for him that the man decides to join them in some kind of chair grabbing sex game.Since then, the four of them have gotten together for group sex almost every week.The two boys gradually began to feel the advantage they were in, and they demanded more and more rewards.And in the last week, the boy's asking price was ridiculously high.The man refused their request, so they threatened the man and his lover in turn.Leaving aside this troublesome matter, now, the man has received a letter from the girl again.He felt terribly terrified, terribly terrified. This series of events finally revealed the answer to the mystery, and everything the man feared became true.Not only was the girl not lying, she was going to have a baby.The man refused to pay her the amount requested in that letter, so the girl's father decided to appeal against the man for alimony.The man denies that he is the father of the child and that he has ever had sex with the girl, but according to the law, he must be forced to accept the blood relationship identification.After the incident was made public, the two boys were also encouraged.They are now 14 and have decided to use the man and their story to extort huge sums of money too.So the boys came forward and accused the man and his lover of ignoring the boy's wishes while coercing him into gay group sex parties. A man predicts his mate very well.At first, she supported the man when he was forced to undergo a blood test, but then the homosexual scandal broke out, and the man's spouse left him and returned to his country with his two daughters.The man never saw them again.Less than a week after his spouse left, the blood test came in: he was the father of the baby the schoolgirl was carrying.The man was arrested, and the law then found him guilty of having sexual intercourse with an underage man or woman and sentenced him to prison.He only spent a short time in prison, but it was enough time that he contracted HIV from other gay prisoners.After the man was released from prison, he was not only unemployed, but also fell into poverty and illness. Finally, on the eve of his 37th birthday, the man finally died of AIDS. Young men and women will have sexual intercourse with most objects after puberty, and choose a partner from them.The vast majority of men and women will have children during the course of being with one or two long-term partners.For men and women who exclusively seek heterosexual partners, most men may have sex with 12 women in their lifetime, and most women may have sex with 8 men.Generally speaking, they will have a total of 2 children and 4 grandchildren. In addition, there are a few people who pursue reproductive fruit in quite different ways from others.Some of these minorities are bisexual, who express only "sexual" interest in the same sex in most (though not all) of their life situations.There are also some people who like to interbreed. In their lifetime, although they may not have sex with more than a thousand people, they may have more than a hundred sexual partners.Others, on the contrary, have sex with only one person the entire time.There are also some men who will force women they have never met to have sex with them.But that's just part of their sexuality, and some men even gang up on women to rape them. It is very difficult for the conservative majority to understand the minority who adopt alternative reproductive strategies.Those particular behaviors are often seen as outliers by most people.While such occasional behavior is unacceptable, these minorities, like the rest of the conservative majority, act according to their reproductive strategies and pursue their reproductive success.We should not assume that because their strategies are different, they will not be able to reproduce. The seven scenarios that will be introduced in this chapter are not common.We would like to use these scenarios here to illustrate the characteristics of human sexual behavior in pursuit of successful reproductive strategies.In the first scene of this chapter, we will show you how male homosexual behavior can contribute to the reproductive success of fully heterosexual people. People generally use very ambiguous terms when discussing homosexuality, which makes the definition of homosexuality appear ambiguous.The following nouns are all related to men. Let me first define the definitions of these nouns as follows: "Heterosexuality" means that men only have sexual intercourse with women. "Total homosexuality" means a man who spends his life having sex only with other men. "Bisexual" means that a man has had sexual intercourse with both men and women in his lifetime ("intercourse" here means at least "genital contact"). "Homosexual conduct" refers to homosexual activity between men and other men. "Homosexual behavior" can happen to "exclusively gay" people as well as "bisexual" people. It seems incredible that men use homosexual behavior to pursue reproductive results.Most people assume that if a man feels sexually attracted to another man, that man must be reproductively ineffective.In fact, this idea is even more incredible.It turns out that the conclusion should be the opposite.Although homosexual orientation will reduce the level of reproductive achievement, it is a means that can replace heterosexuality in improving reproductive achievement. Males who were attracted to other males not only still reproduced, but in general they did very well.On average, all readers (referring to British readers) have had a male ancestor who has been gay within the past five generations—in other words, since about AD 1875.This statistic does not mean that we all inherit a tendency to behave homosexually.As we shall see below, there are some who have inherited this tendency, but these are still a minority.What's more, if the ancestors had not shown homosexual behavior, we would not exist in this world today. Before explaining how homosexual behavior can help men pursue reproductive success, we must first ask you to understand four basic facts about male homosexuality. concept. First, homosexual behavior is not uniquely human.Adolescent birds and mammals alike frequently exhibit this behavior.Male monkeys will caress each other, masturbate, and even have anal sex, which is the same as human homosexual behavior.For example, there have been reports of a male monkey hand masturbating to orgasm while being anally penetrated by another male monkey. Second, as far as humans are concerned, only a minority of males exhibit homosexual behavior—at least in the most industrialized large-country societies.In the United States and Europe, for example, only 6 percent of men have had homosexual experiences in their lifetime, mostly during adolescence.Also, two-thirds of the men had intimate genital contact, often anal sex. Third, among all birds and mammals (including human males), the majority of males who exhibit homosexual behavior are also bisexual.For example, some male monkeys engage in anal sex with others of the same sex, but they do not experience less intercourse with female monkeys as a result.The same is true for human males. Most men (about 80%) who have sex with their own sex also have sex with women.Many men will be like the man in scene 30. They will become "full homosexual" or nearly "full homosexual" for a certain period of time, but among these men, less than 100% of these men will continue this behavior throughout their lives. %. Fourth, there is now definite evidence that homosexuality is hereditary.Usually the gene for such homosexuality is inherited from the mother, not the father.For example, the man in this scene with homosexual tendencies, his mother's brother and mother's cousins, are much more likely to have such tendencies than the father's brothers and cousins.Like the man in this scene, he is showing homosexual behavior with his mother's brother (referring to his uncle).And his cousin was probably also a child born to his mother's siblings. Although homosexual behavior has a genetic basis, this view does not mean that boys' behavior is not influenced by childhood encounters.Some men with homosexual tendencies may not have had such tendencies as children, while others may have.We can almost certainly say that the man in this scene must have the genes for homosexual behavior in his body, but without the intimate relationship between him and his uncle, the man's homosexual tendencies may never have been developed.The opposite is also possible (though less common).In other words, even if men do not have the gene for homosexual behavior, they may be lured or forced into homosexual behavior at an early age.In addition, there are more recent data pointing out that "full gay" and bisexual people are often born, but on the other hand, they can also be trained. Biologists have been trying to understand the evolution of homosexual behavior, and now this discovery provides biologists very important clues.On average, genes that are not beneficial to the reproduction of individuals cannot be inherited at a rate of 6%.Therefore, of course, men who practice homosexuality all their lives will not get any reproductive results, but bisexual men can achieve something in terms of reproduction.From this point of view, full homosexuality may well be just one of the various reproductive benefits of being bisexual, a by-product of genetics.Assuming this inference is true, homosexual behavior could be one of many genetic traits in humans.When an individual inherits only a few genes associated with this trait, it is beneficial to the individual, but it is harmful to the individual if the individual inherits too many of these genes. Here is an example of the most traditional genetic trait, sickle-cell anemia (sicklemia).It would be good for humans in the tropics to have a fair amount of the sickle-cell gene, because they would be more susceptible to malaria than people without the gene. resistance.But when the number of this gene in the body doubles, it will not only shorten the human life span, but even make people have to endure pain and suffering for life. Of course, although homosexual behavior is compared with sickle cell anemia here, we should not interpret this comparison as: homosexual behavior is also a disease like sickle cell anemia.We use sickle cell anemia as an example here simply because it's the best example of a disease to study the principles of genetics and therefore help us understand homosexual behavior.We can assume that bisexuals have very few genes for homosexual behavior, whereas homosexuals have quite a few of them.Therefore, bisexual people will have more benefits in reproduction than heterosexual people, while homosexual people will not be able to produce offspring, and they will have more benefits in reproduction than heterosexual and bisexual people. obviously at a rather disadvantaged position. So, how much more reproductive benefits do bisexuals have than heterosexuals who only have intercourse with women throughout their lives? A bisexual person may have fewer children with his long-term partner in his lifetime, but may have children at a very young age.For example, the man in scene 30 has two children with his long-term partner, which may be the average number in his society.But the man gave birth to both children before he was 23, years before the average heterosexual childbirth age.Having children early might not seem like a huge benefit to reproductive outcomes, but it actually helps.Because biologists don't just count the number of children or grandchildren when they count reproductive scores, they also count the rate of reproduction.If a person has more children in his lifetime than others, or if he has the same number of children earlier than others, he will have a higher reproductive rate than others.Although what we want to discuss in this book is only about how to pursue reproductive results, there is one very important thing that you should not overlook, that is, what we usually call reproductive results actually refers to the reproductive rate. Comparing different categories of men—say, bisexual versus straight—is difficult.Even if we limit the scope of the comparison to their long-term partnerships, the comparison is still difficult.Because there may be a situation at this time: although the long-term couple has a child together, the man in the partner is not the biological father of the child.This possibility would render the comparative work completely meaningless.And it's even more unlikely to compare the reproductive success that many women achieve in short-term relationships with men.Because even the woman herself can't figure out whose children she gave birth to, and the men certainly have no way of knowing the truth.But clearly, for bisexuals, it's the above-mentioned pathway to reproductive success that matters most.But although we speculate that this reproductive route allows bisexuals to achieve higher reproductive success than heterosexuals, we still have no evidence to support this idea. One of the characteristics of bisexual men is that they have multiple partners (both men and women).According to statistics, about a quarter of men who exhibit homosexual behavior have at least ten same-sex partners in their lifetime.For some of these men, the number of same-sex partners can even exceed a hundred or more.What's more, the more same-sex partners these men had over their lifetimes, the more heterosexual partners they seemed to have as well.Also, on average, bisexual men ejaculate more women in their lifetime than heterosexual men, so bisexual men are also more likely to have half-children. Most importantly, though, bisexual men are generally more able to attract and seduce different women.Does this specialty have something to do with the fact that he has had many male partners?We can discuss this issue from three aspects. First, bisexual men learn various sexual techniques from other boys during their teenage years.According to statistics, more than 80% of men who have had homosexual behavior were before the age of 15, and 98% showed such behavior before the age of 20.Gay men often exhibit this behavior during their teenage years, or even as children, when they are with elders or peers.In order to compare two kinds of boys with homosexual experience and heterosexual experience side by side, and to see the difference between them, we will use the two males in scene 30 and scene 27 as examples.The man in Scene 27, at the age of 19, not only did not understand the subtleties of the female orgasm, but he did not even know where to start sexual intercourse.On the other hand, the bisexual boy in scene 30, he was able to seduce girls to have sex with him when he was 13 years old.By the time he was 19, women who wanted to please him were already lining up for his favor, and even at 29, his radiant sex appeal still attracted girls 15 years his junior.Judging from the results, this man had 3 women give birth to 4 children for him before his 30th birthday.This number is more than the number of children that heterosexual men in his society will have in their lifetime. Second, homosexual behavior can help heterosexual reproductive performance, because homosexuals have the opportunity to practice intercourse with various types of people.A bisexual man's experience with most different types of male partners gives him an advantage when it comes to dealing with most different types of female partners.The man in scene 30, for example, notices a resemblance between his last gay lover and one of his former heterosexual partners.This woman also once bore him a child.A man's previous experience with someone can help him deal with his subsequent relationships with others.For example, the man in this scene has experience with women before meeting his gay lover.Assuming the situation was reversed, the result would be the same.The experience a bisexual man gains with men of a particular personality can also help him form relationships with women of similar personalities.Similar experiences even come in handy during the various stages of his relationship with women—from seduction to stimulation, intercourse, and even when cheating on women. Third, homosexual behavior can help heterosexual reproductive outcomes, because bisexual men may have affairs with other men while establishing long-term partnerships with women, which is equivalent to providing him with an opportunity to practice, future He may also take the risk of having an affair with another woman.Although bisexual men apparently experience a gradual decline in homosexual behavior after puberty and begin to develop relationships with women, it is unlikely that their homosexuality will disappear completely.A bisexual man with a long-term heterosexual partner will continue to have his gay affair in secret, just as he will have his heterosexual affair in secret. There are many benefits for bisexual men who have affairs with same-sex men.First, it is less likely for a man to have his (female) long-term partner discover that he is having affairs with other men.At least harder than finding out he was having affairs with other women (often because she didn't know he was bisexual).In general, if a woman is unsure of her partner's true sexual orientation, she's more likely to assume he's bisexual -- because most men are.Women, on the other hand, often don't feel as deeply threatened by their partner's relationships with other men as he does with other women.This is because the average man's relationships with other men are not as "sexual" as his relationships with other women.Even if the relationship between a female partner and other male partners contains "sexual" elements, at least at the beginning, women will not suffer too much loss.The toll on her is greater when her partner has affairs with other women.While a bisexual man still has to pay certain costs when he has affairs with other men, for example, he may contract a disease, there are no other greater risks.For example, a man will not reduce his assistance to a long-term partner because his same-sex lover will not have children to ask him to help raise.Also, if his lover is male, he is less likely to abandon his long-term partner in order to live with her. All in all, a male's homosexual behavior around adolescence can give him a greater reproductive benefit than his other heterosexual peers.That being the case, why are bisexual men so rare? The reason is simply that the costs of being bisexual outweigh the benefits.The greatest cost of homosexuality is disease.Even before AIDS was discovered, homosexual behavior was prone to sexually transmitted diseases (such as syphilis) and risked early death.In fact, the genetic program of bisexuals has long been programmed to pursue the reproductive results of a lifetime as soon as possible, and to have as many children as possible (with more women), and bisexuals must use these interests to fight against The fate of an early death. Another price bisexuals have to pay is genetic.Let's compare it again with sickle cell anemia.We have said before that, although some people have immediate benefits when they have a certain minority gene, these benefits are not as valuable as we expect them to be.因为和那些完全没有这种基因的人比起来，拥有少数基因的人所生出的后代很可能会拥有大量这种基因。换句话说，双性恋者虽然比异性恋者更快生下子女或孙子女，但在双性恋者的后代当中，有些人会是完全同性恋者，他们是不会留下任何后代的。 此外，双性恋者还必须付出另一种代价，那就是绝大多数的异性恋者所表现出来的同性恋恐惧症——对同性恋行为的一种偏见。有时，这种偏见会以十分极端及暴力的方式表现出来。不论任何男性，只要被怀疑是同性恋者时，就得面对受伤甚至遭到杀身之祸的危险。我们在前面场景12和场景13里谈到自慰时，曾经提到过类似的例子。虽然那时所提到对同性恋的偏见还不至于过度极端。当然，这种对自慰的偏见完全是装腔作势的伪善，因为威胁者也可能和被威胁者一样，会在暗中进行自慰行为。不仅如此，有些同性恋恐惧者甚至也可能是伪善者，他们在公开场合表现出对同性恋的恐惧，但在暗中却是一名双性恋者。但就整体来看，大部分的同性恋恐惧者差不多都是异性恋者。 通常，会被同性恋恐惧者视为偏见的对象，大概都是因为他们在某方面让人感到威胁。而同性恋恐惧者很可能也和双性恋一样，是来自天生，而非出于后天的培养。这一点，也正是我们前面说过的，双性恋是人类追求繁衍成就所得到的自然进化成果。双性恋者拥有利于繁衍的条件，这是他们让周围的异性恋者感到大受威胁的原因。而更不幸的是，双性恋者同时正好又是传播性病的媒介，这使得他们给人的威胁感更强。因此，就像我们在前面讨论自慰时曾经说过的，从周围的个人立场来看，他们对双性恋所能采取的防御手段，就是以威胁和恐吓来减低双性恋者所拥有的繁衍优势。 总而言之，从结论来看，双性恋者和同辈的异性恋者比起来，他们在追求繁衍成就的过程中，等于是两脚同时踏在优势与劣势的立足点之上。而最重要的问题是，究竟双性恋者付出的代价是超过还是低于他们所得到的利益呢？还有，双性恋者能比异性恋者获得更高的繁衍成就？或是根本无法与异性恋者相提并论？这个问题的答案要视双性恋者在整个社会中所占的比例而定。如果双性恋者只占少数，他们就会比异性恋者获得更高的繁衍成就。如果双性恋者在社会上变成多数，他们的繁衍成就则会低于异性恋者。我们将在下面详细说明其理由。 双性恋者能在繁衍竞争中得到优势，主要由于他们的繁殖率可能会高于整个社会的平均标准。就像我们曾经提到过的，双性恋者在较早时期学会了较佳的性技巧，因此在吸引女性跟他们进行性交时，双性恋者比其他男性占了竞争的优势。无论如何，社会上的双性恋者人数越多，他们碰到双性恋的竞争对手的可能性也就越大；而双性恋在社会上越普遍，他们在繁衍竞争中所占的优势就变得越弱。 总之，双性恋者人数在社会上所占的比例变高时，不仅他们所享有的优势会变弱，同时，他们必须付出的代价也会提高。我们已经在前面说过双性恋者必须付出的三种代价，而随着双性恋者日渐普及，其中的两种代价——基因变化与感染性病——则很明显地也会提高。 关于基因方面的代价，体内拥有同性恋行为基因的人数越多，伴侣两人同时拥有这种基因的可能性就越大，因此，一对伴侣生出完全同性恋的子女或孙子女的机会也就随之增加。而完全同性恋的子女或孙子女是无法生出任何后代的。至于感染性病方面的代价，同性恋行为在全体人口中所占比例越多，性病散布的速度就越快，而染上性病的人数（同时包括异性恋者与双性恋者在内）也越多。但由于双性恋者原本就是经常处于染患性病的风险当中，所以在这种状况下，他们遭受到感染的威胁也比别人厉害。因此，双性恋者提早死亡的可能性也会随之提高。 我们已经说过，双性恋者人数比例不大的时候，他们所享有的繁衍利益将远远大于异性恋者。这种现象带来的结果是，拥有双性恋基因的人数比例将会大为增加。相对地，双性恋者人数比例变大的时候，他们享有的利益将大为减少，而付出的代价则将会提高。如果双性恋者人数增加得太多的话，他们的繁殖率便会开始下降，而且会一直降到比异性恋者的繁殖率更低。而这时双性恋者的人数比例也会同时随之下降。 双性恋人数比例的消长会引起利益与代价之间的相互作用，而从结果来看，双性恋的人数比例必然会趋于稳定。不仅如此，这种比例将一直精确地维持在稳定状态：每一代的双性恋者刚好能和异性恋者享有相等的繁衍利益。所以，对于我们在前面提出的疑问：双性恋和异性恋两者之中，究竟谁能获得较高繁衍成就？答案应该是：两者皆非。两者之间惟一的分别只在于双性恋的繁衍成果是不确定的。因为他们也很可能不会留下任何后代。不过，只要他们不被同性恋恐惧者杀掉，或是传染上HIV，他们还是有可能获得极高的繁衍成果的。一般来说，“风险越高”和“利益越大”两者之间会持续保持平衡。 综上所述，我们的结论是，在工业化较先进的社会里，男性拥有双性恋基因的人数比例会一直稳定维持在6%左右。因为从平均来看，双性恋者和异性恋者在这种比例下，才能维持理想的平衡状态。 当然，不论社会上双性恋人数比例增加到什么程度，如果他们所须付出的代价永远都比不上他们获得的利益，情况则又会大为改观。例如说，假设在某些社会里，性病的危险性几乎等于零。不论这些社会里的双性恋者人数比例多高，他们获得的利益永远都高于他们必须付出的代价。这时我们能够肯定，拥有双性恋基因的男性将逐渐遍布整个社会。不过，像这种双性恋者几乎不必付出任何代价的社会有可能存在吗？The answer is yes. 到目前为止，我们一直是拿大型工业化社会来举例讨论。其实，这种社会是最不适合双性恋者生存与推广的。特别是双性恋者所须付出的主要代价——性病——很容易在这种社会上藏匿及蔓延。例如最近出现的艾滋病正逐渐在各地蔓延，其实，这只是人类史上反复重演的一连串事件中的一个最新例子罢了。就像从中世纪到20世纪，梅毒曾经是大型社会里的主要性病一样。 回顾历史，通常在小型且比较孤立的社会里，疾病相对地也不容易发生。这些社会里的成员都是过去那些流行传染病的幸存者所生下的后代，所以他们也继承了祖先天生的（也可能是遗传上的）免疫能力。由于他们很少和外界接触，因此新型疾病也就很难在这种社会里散布。而当他们有机会与外界接触时，不论他们是双性恋或异性恋，都没法躲过染上疾病的命运。有些人能够幸免生存下来，这些人也和他们的祖先一样，是因为体内拥有某种免疫能力，而他们同时也会把这种免疫能力遗传给自己的后代。总之，在这些社会成员接触外界并染上天花、梅毒及现代的艾滋病之前，他们所属的小型孤立社会，在很长一段时期之中都不曾感受到传染病的危险。在这种状况下，由于没有疾病的阻碍，双性恋基因就能广为传布，而且双性恋者也不必去冒那些他们在现代大型社会里会遇到的风险。这些小型社会的双性恋者，不论他们的人数比例增加到怎样的程度，他们还是会比异性恋者提早生出后代。也因此，我们在这些社会里首次进行调查与研究时，就算是发现这些社会里双性恋人数比例远远超过大型社会，也不必感到过分惊讶。此外，还有另一种现象也是必然的结果：当这些社会里的大多数人都是双性恋者时，同性恋恐怖症便会大为减少，甚至完全消失。 至于一般人对双性恋所抱持的容忍程度，大部分工业化先进社会都将双性恋视为一种例外，而非一种常规之内的行为。但从人类文化学的角度来看，在60%的人类社会里，双性恋不仅十分常见，同时也被这些社会所接受。例如在美拉尼西亚（Melanesia）某些小岛的社会里，任何青少年男孩在某段时期内都会和同性进行肛交，这种行为在当地社会算是一种正常的行为。而当地的女性也允许她们的长期伴侣偶尔和其他男性发生性行为。因为和伴侣的异性恋外遇比起来，这些女性更愿容忍伴侣的同性恋外遇。她们所持的态度是，只要她和伴侣的异性恋关系不受到任何影响，她们就不会在意伴侣的同性恋活动。所有这类社会里的年轻男孩都会当一段时期的同性恋者，有些男孩甚至会和其他同性建立短期的一对一关系。不过，即使是在这类社会里，终生奉行完全同性恋的男性还是十分罕见。因此很显然的，同性恋行为只是双性恋者繁衍策略中的一环。不仅如此，即使异性恋在某些较大且疾病更多的社会里是一种标准行为，但由于同性恋行为在繁衍策略中扮演着十分成功的角色，所以它有时甚至能够完全取代异性恋。