10 nerazgadannnyh mystery man
Surprisingly, modern science still puzzle some of the features of our physiology and psychology. British popular science magazine New Scientist has made a rating of the inexplicable.
1. Ability to shame
Scientists believe one of the greatest gaps in the theory of evolution no clear explanation of why people got into an awkward position or being caught in a lie, start to blush. Thereby sending a clear signal to others: here I am in front of you - a liar, a scoundrel, a liar. But why? There is only a vague suggestion. Like, sending the paint on the face, nature makes people less lie. A red-faced liar sends a group of people surrounding a signal of willingness to apologize. This reduces the level of aggression and makes other people more likely to forgive the offender. Perhaps the ability to blush helped people at the dawn of evolution to reduce aggression in society. Who knows, maybe now helps?
It is still not clear exactly what causes a person to have fun. After all, a sense of humor at all completely different. The assumption of scientists that laughter is needed to balance the mental processes. For example, in order to extinguish the excitation voltage and sorrow. Laugh creates a real "biochemical storm" - is produced naturally intoxicating substances - endorphins, antidepressants. No wonder the British have a saying: "Teach me laugh - save my soul."
3. INTIMATE HAIR
In the course of evolution man has lost virtually all wool. But why has retained special thickening of pubic hair? After all, this place is the most susceptible to parasitic infections. The assumption of scientists: most likely, they were for sex. After all pubic hair grows in a place where there is a greater accumulation of glands and the corresponding odor. And the hair - is a means to spray and carry the scent. Thus, the tufts of hair are that kind means "advertising." 4. THIRST create works of art
The man simply can not create beauty. It pleases the eye. But as a rule, devoid of any utilitarian purpose. And why is it necessary? The assumption of scientists: beauty let indirectly, but still helps a person to create better utilitarian objects. For example, a comfortable environment and people perceive more aesthetically attractive. And uncomfortable - like ugly. Creating works of art, the person trains his brain, which in the process is improved to address the purely applied problems. And perhaps he was right, Leo Tolstoy, who wrote: "... the word one person sends another thought, the art of the same people pass each other their feelings."
rational sense in no superstitions. But they are. Paradox? The assumption scientists vitality will take based on the memorization of luck and trouble forgetting. We become very superstitious when we have some difficulties. Due to the dark thoughts we are worse than control their actions and make new oversight. And then, all blamed on the black cat. If the person passes the cat, then give yourself installation that everything will be fine. It is a kind of placebo.
This is a unique human feature - live for others - lies in the brain. Already in the 18 months babies begin to show altruistic behavior. Indicating that the human innate friendliness. But what causes people to help relatives and even without benefits for themselves? The assumption of scientists: altruism is needed when choosing a partner. Both men and women. Selflessness towards others makes a person more appealing to the opposite sex. The development of the human brain has made parenting a very complex process, so for our ancestors, it was important to choose a partner that can be a good and devoted parent. Manifestations dedication indicate best on this ability, so genes associated with altruism could be saved in the process of evolutionary selection. 7. picking his nose HABIT
The harmful like activity - from the nostrils pulled out the tiny hairs that help filter out dust and dirt from the air we inhale. But pick your nose all who secretly who publicly. From children to adults. The assumption of scientists: the meaning may be hidden not in the process itself, and in its consequences. After all, many still eat your boogers. Disgusting? Far from it. Some researchers have seriously believe that it is - a good way to strengthen the body's immune system. On a par with kisses. But at the dawn of evolution, then again, it could all be unique. When the kiss was not with anyone. After all, the nose filters out a large number of various bacteria. Once in the stomach, this "mixture" works like a universal vaccine - for many diseases. Just do not abuse it. In addition, American physiologists argue that digital massage of the nasal mucosa, stuffed with different receptors, improves brain activity.
How and why did the tradition of kissing, why had sexual connotation, no one knows. Although full of hypotheses. But what is the most reasonable? The assumption scientists may kiss - in the original basis of his - a kind of vaccination method, invented by nature. Because saliva contains a variety of bacteria. 80% of them are the same in all people, and 20% of the individual. When you kiss these bacteria are transmitted from person to person. In the mouth, they cause revival of other microorganisms, giving momentum to the immune system and starting the process of antibody formation. 9. LONG adolescence
Even our closest relatives - the great apes do not have such a long transition from adolescence to adulthood. Puberty occurs in chimpanzees about 5 years old, when they run out of childhood. In humans, the so-called puberty lasts from 11 to 20 years. Why? The assumption of scientists: adolescence - is the latest acquisition of historical humanity. The duration of puberty depends on the level of development of society. The higher it is, the wider the band between the end of puberty onset and final maturity.
Once our ancestors there was a firm belief: during sleep the human soul temporarily leaves his body, to wander through the world. And we dream that she sees in his travels. Later Sigmund Freud claimed that dreams are a reflection of our unconscious desires. But today, most researchers reject it. But then why do they need?
The assumption scientists dreams occur in our brain as a result of random electrical activity. Almost every 90 minutes, the brain stem sends chaotic electrical impulses throughout the brain. The forebrain, which is responsible for analytical work, desperately trying to understand these signals. And the only way to organize them - see dreams. They do not carry any message. But not quite so meaningless. The way our frontal brain selects certain moments from the continuous stream of pictures can reveal our essence. In addition, the dream is likely to promote the transition of the received information the day of the short-term to long-term memory.