We human beings are born not to eat human flesh, not only do not eat, but also psychologically, instinctively, very resistant to human flesh, very repulsive, and this rejection and resistance, is innate, does not need to be nurtured, then, let me ask: why are we humans not only not interested in human flesh, but also particularly resistant? How did this psychological mechanism come about? Today, Lao Feng is simple and rude, popularize science for you.
Knowledge Point 1: All species follow one of the most basic laws: survival and reproduction are the fundamental motivation for all the actions of a species. If a species likes to eat the same kind of meat, then it means that the species must kill each other all day long, a species that kills each other in order to eat each other's meat, the number of individuals must be smaller and smaller, and the species will inevitably go extinct. In other words, in the history of biology, there may be some species that love to eat the same kind, but they are all extinct, and those of us who have survived and reproduced to this day, the genes are all with their own instructions: the meat of the same kind is disgusting, and it is not allowed to eat the same kind. Especially in mammals, the characteristic of "not eating the same kind" is particularly obvious. In other words, not only do humans not like to eat human flesh, but also dogs do not like to eat dog carcasses, cats, cattle, sheep, lions, tigers, are the same reason, in the mammalian kingdom, there is almost no love to eat the same kind, the reason is not complicated: mammals that love to eat the same kind, are extinct, reproduced, are not like to eat the same kind.
Knowledge Point 2: Although there are some fish in the sea that occasionally eat the same kind, on land, some insects such as praying mantises occasionally eat the same kind, but these are exceptions, and even so, praying mantises, fish or not, their behavior of eating the same kind is also accidental, in other words, they are not based on the same kind of staple food, among the existing species on the earth, none of the species is based on its own species, without exception all are based on the staple food of different species, because if the same kind of staple food, It will lead to the number of species becoming smaller and smaller, and the population will not be able to continue, which is completely contrary to the basic laws of biological reproduction. Therefore, only species that "do not like to eat the same kind" can reproduce, prosper and carry forward.
In fact, throughout the world, even among indigenous people, cannibalism is only a very small minority, and it is not a common practice
Knowledge point 3: cannibalism, there are health risks, this knowledge point is very fresh, please read it patiently: there are many pathogens in nature, are targeted to select the host, for example: chicken parasites generally only parasitize on chickens, can be transmitted from one chicken to another, but generally not from chicken to pig, and for example, for cattle bacteria, usually the host is cattle, mainly rely on cattle to cattle, rarely transmitted from cattle to ducks, in the same way, human hepatitis B virus can be transmitted from person to person, But generally can not be transmitted to lions through people, according to this law of nature, we humans in the slaughter of chickens, cows, ducks and other alien diseases, generally will not be these alien infectious diseases (note: this is the general situation, but there are exceptions, such as accidental outbreaks of avian influenza), but when humans are slaughtering, cooking, eating the same kind (people), it is possible that the flesh and blood of the same kind of corpses are infected with virus germs, and then suffer from diseases, the most typical is "prions", also known as "prions".
Knowledge point 4: Prion, also known as prions, Mandarin pronounced ruǎn, English word called Prion, although this thing is called a virus, but its essence is a mutated, misfolded protein, "cannibalism" is one of its main transmission routes, lion tigers eat human flesh, prions will not cause harm to lions and tigers, however, after humans eat human flesh, prions enter the human body, may destroy the normal proteins in the human body, causing a variety of diseases, such as "infectious spongiform encephalopathy", Humans infected with prions, with this disease, will die.
Knowledge Point 5: Prions have a very annoying feature: high-temperature cooking cannot kill. That is, even if you eat human flesh that has already been cooked, it is still possible to be infected with prions, which can lead to illness and eventually death.
Knowledge Point 6: In the 1950s and 1960s, Daniel Carleton Gajdusek, a researcher at the National Institutes of Health, and his team, when studying a tribe in Papua New Guinea, found that after eating human flesh, the existing tribal members contracted a "Kuru disease", and many tribal members died. After research, it was concluded that it was because of cannibalism. Human flesh and bone contain prions, which do not die when boiled, and after entering the human body, they cause diseases. Daniel Gedušek was awarded the Nobel Prize (Nobel Prize in Physiology or Medicine) in 1976 for this discovery. In other words, American scientists discovered decades ago: people cannibalize people, there are health risks. In Christian parlance, God curses the act of "cannibalism."
Daniel Carleton Gajdusek won the Nobel Prize for his research on prions and cannibalism
Knowledge point 7: Note that eating human flesh does not necessarily lead to prions, just to say, the more human flesh you eat, the greater the chance of contracting prions, the greater the chance of getting sick and dying, just as you have a relationship with AIDS patients, once or twice, you may not necessarily be infected with AIDS, but the more times you have sex, the greater the chance of being infected.
Knowledge point 8: Examples of "cannibalism" disease, not only occur in people, but also in cattle, at the end of the 1980s, some British farmers were reluctant to discard the internal organs and bones of cattle, grind them into powder, and feed cattle, as a result, the famous "mad cow disease" broke out, yes, you read it right, the mad cow disease that is very famous on the earth is caused by "cows eating cattle", and it is also the result of mammalian "cannibalism", and Papua New Guinea indigenous cannibalism disease, completely the same reason.
Mad cow disease is actually the scourge of "cows eating cows"
Knowledge Point 9: In 2006, there were some lonely Japanese farmers, who did not learn the lessons of the British, and also ground the internal organs and bones of cattle into powder to feed cattle, and as a result, Japan also broke out of mad cow disease that year, which is exactly the same as the mad cow disease outbreak in the early years of Britain.
Knowledge Point 10: In order to avoid the extinction of this species, in order to avoid infection with prions, humans have evolved a feedback mechanism: when they see human flesh and blood, they are disgusted, disgusted, want to vomit, resist, and reject. This may be the information and instructions left to us by human ancestors in their genes, in other words, human side branches that have not evolved this feedback mechanism may be gradually eliminated in the competition for survival.
In the end, Lao Feng summed it up with you:
First: "cannibalism" violates the law of species reproduction. Historically, mammals that love to eat the same kind have become extinct, and those who have survived have not eaten the same kind.
Second: "cannibalism" is unhealthy, unhygienic, and easy to get sick, so mammals that love to eat the same kind are extinct, and they do not like to eat the same kind and reproduce.
Third: resistance to eating the same kind is the psychological mechanism evolved by mammals including humans, in history, mammals that have not evolved this psychological mechanism have become extinct, only mammals that have evolved this psychological mechanism have reproduced to this day.
Finishing touch: When analyzing all the phenomena of nature to the end, you will find that they are actually reasonable.