10 unsolved mysteries of human

Modern science is still puzzlingSome features of human physiology and psychology. Recently, British scientists made a rating of the most inexplicable, about what science has so far only assumptions.

10 unsolved mysteries of human

1. Ability to shame

Scientists believe one of the greatest gaps andthe theory of evolution no clear explanation of why people caught in 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 and a deceiver. But why?

Science has only a guess: sending the paint on the face, nature makes people lie less. 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.

2. Laughter

It is still unclear exactly what causes a person to have fun. After all, a sense of humor at all completely different.

Assumption of scientists: laughter is needed to balance the psychological processes. For example, in order to dampen the excitement, tension and sadness. Laugh creates real biochemical storm - produces natural intoxicating substances - endorphins, antidepressants.

3. Intimate questions

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.

Assumption of scientists: most likely they were to stand, because the pubic hair grows in a place where there is a greater accumulation of glands and associated odor. And the hair - is a means to spray and transfer the smell. Thus, the tufts are edakii advertising medium.

4. Thirst to create works of art

One simply can not create beauty. It is pleasing to the eye. But, usually devoid of any utilitarian purpose. And why is it necessary?

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 is in the process of developing and improving solutions for clean applications.

5. Superstition

Rational point in no superstitions. But they have. Paradox?

Assumption of scientists: vitality will take based on the memorization of successes and forgetting the troubles, we become very superstitious when we have some difficulties. Due to the dark thoughts we are worse control their actions and to make new oversight. And then, all blamed on the black cat. If the person passes the cat, then give yourself installation that all will be well.

6. Altruism

It's a unique human feature - live forothers - lies in the brain. Already in the 18 months babies start to show altruistic behavior. What says human innate friendliness. But what causes people to help relatives and even without benefits for themselves?

Assumption of scientists: altruism is needed when choosing a partner - both men and women. Dedication towards others makes a person more attractive 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 capability, so the genes associated with altruism could be saved in the process of evolutionary selection.

7. The habit of picking his nose

Harmful, like, occupation - from the nostrilspulled out the tiny hairs that help filter out dust and dirt out of the air we inhale. But pick your nose all who secretly who publicly - from children to adults.

Assumption of scientists: meaning, perhaps, is hidden not in the process itself, but in its investigation. After all, many more and eat their boogers. Disgusting? Not at all. Some researchers have seriously believe that this is a good way to strengthen the body's immune system. Along with kisses, And 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 as a universal vaccine - against many diseases. In addition, American physiologists argue that digital massage of the nasal mucosa, stuffed with different receptors, improves brain activity.

8. Kiss

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?

Assumption of scientists: perhaps a kiss - in the original basis of his - a kind of vaccination method, invented by nature. Because saliva contains various 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 the revival of other microorganisms, giving impetus to the immune system and triggering the process of antibody formation.

9. Prolonged adolescence

Even our closest relatives - largemonkeys - there is no such a long transition from adolescence to adulthood. Puberty occurs in chimpanzees about 5 years old, when they run out of childhood, people have the so-called puberty lasts from 11 to 20 years. Why?

Assumption of scientists: adolescence - this latest acquisition of historical mankind. 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, and the onset of final maturity.

10. Dreams

Once upon a time our ancestors existeda firm belief: during sleep the human soul temporarily leaves his body, to wander around the world. And we dream that she sees in his travels. Later, the Austrian psychiatrist Sigmund Freud claimed that dreams are a reflection of our unconscious desires. But today, most researchers reject it. But then why the dreams are needed?

Assumption of 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 images, can open our essence, in addition, the dream is likely to facilitate the transition of the day received information from short-term to long-term memory.