Humans degenerate for evolution!

About 4 million years ago, the oldest ancestor of mankind appeared on the earth. After millions of years of evolution, human beings have evolved into the highest-ranking creatures on the earth, with an IQ unmatched by other creatures, a stronger ability to transform nature, more accurate communication through language and writing, and more dexterous hands to handle complex things. ...

However, few people will notice that degradation has played an important role in every stage of our evolution. When we gain a certain function through evolution, we will degenerate other functions in the same way. Therefore, in a sense, the evolutionary history of biology is also the history of biological degradation.

From animals to people.

Walking upright is an important symbol that distinguishes human beings from other animals. Walking upright will completely liberate human hands, and we can make tools and carry out complex labor with our hands; The activity of the hand stimulates the development of the brain, thus making the hand more flexible. However, when humans evolved to walk upright, they also lost the advantages of many quadruped reptiles. The weight of a quadruped is borne by its limbs. Compared with humans, the weight of each limb is relatively small, so they can walk a long distance continuously, have a faster running speed, and it is easier to keep their balance when their limbs touch the ground. After human beings stand up, they need to spend more effort to maintain the balance of their bodies, which brings about lasting fatigue of nerves and muscles. No wonder many animals, such as horses and cows, can sleep and rest standing up, while people regard punishment as punishment.

In addition, the heart and brain of most quadrupeds are basically at the same level, and the heart can transport blood to all parts of the body without too much pressure. In order to walk upright, the human heart bears a much greater burden than other animals, and the heart must exert greater pressure to transport blood to the brain half a meter away. Therefore, it can be said that some human-specific diseases, such as heart disease, hypertension and arteriosclerosis, are rooted in walking upright.

At the beginning of life, every cell is omnipotent and can produce any tissues and organs. In order to make each cell function more efficiently, in the process of evolution, cells began to differentiate, and tissues and organs specialized in performing specific functions appeared. However, although these specific cells operate more efficiently, they also lose their totipotency, which leads to the irreproducibility of human organs and tissues. However, organisms with low cell differentiation have more obvious advantages in self-recovery: crabs can grow new ones when their legs are broken; No matter how many pieces a starfish is divided into, each part can grow into a complete individual independently.

The evolution of language ability is undoubtedly a leap in human intelligence, but it is also at the expense of other aspects of degradation. Before the appearance of language, human beings mainly transmitted information through expressions and body movements. In order to understand each other's meaning more completely and accurately, human's ability to imagine the natural posture and sense the body has been fully developed. The appearance of spoken language has greatly enhanced the brain's ability to recognize and perceive abstract sound symbols, but at the same time, human's ability to understand expressions and body language has also deteriorated accordingly. On the contrary, deaf-mute people retain rich facial expressions and strong body perception because the auditory area of the brain has not yet developed.

In addition, human beings lost their body hair in the process of evolution, but they had to rely on external clothes to resist cold and ultraviolet radiation; Human brain capacity far exceeds that of other creatures, but it will leave the mother before it is physically mature; Humans have learned to turn raw food into cooked food, but this has led to the decline of gastrointestinal digestive function. These are all functions that human beings lost in the process of evolution from lower animals to human beings.

The depravity of modern people

Entering modern society, the most obvious sign of human evolution is the ever-changing scientific and technological progress. Developed communication technology allows us to exchange information with friends thousands of miles away in an instant; The popularity of the internet allows us to know what is happening in the world without leaving home; Convenient transportation allows us to walk thousands of miles a day. However, while enjoying the benefits brought by advanced technology, people are also inadvertently experiencing the degradation of human beings brought about by scientific and technological progress.

With the popularization of all kinds of automation equipment and advanced tools, human physical labor is greatly reduced. 100 years ago, a person walked an average of 75,000 kilometers in his life. Nowadays, due to the more and more developed means of transportation, the walking distance of human beings is much less than before. He only walks an average of 42,000 kilometers in his life. Even energetic children don't have much chance to walk. Some children are four or five years old, still sitting in the stroller, being pushed by adults, just like an old man supporting his life. Not to mention those who do a lot of mental work. They can't even get enough sleep. How can they have time and mood to do some sports? In the long run, the degradation of human physique will be inevitable.

The popularity of computers and various electronic products has led to the decline of the brain's ability to calculate and remember. Modern people who are used to typing on the computer can no longer write with pens; Senior intellectuals who are used to computers may not be as good as street vendors in doing four simple operations; People have long been accustomed to giving the task of memorizing phone numbers to mobile phones, and even many people need to ask others to know their mobile phone numbers.

In terms of reproduction, mankind has also made great progress. Scientific and technological means such as IVF and IVF have solved the problem of human infertility, but the widespread application of these technical means also reflects the fact that human reproductive capacity has deteriorated. European scientists found that the sperm count of European men was only 40% before World War II. For half a century, the quantity and quality of human sperm have been declining all over the world. In addition, various unhealthy lifestyles brought about by modernization often lead to women's inability to produce enough breast milk to feed their newborn babies. In order to alleviate the pain, many women tend to choose caesarean section. I wonder if humans will lose the ability to give birth naturally in a few years?

The more human beings rely on science and technology, the more they will lead to the degradation of their own instincts. We rely too much on GPS, so our ability to tell the direction is far less than that of other lower animals; Whether it is three or nine days or three days, we have to turn on the air conditioner to feel comfortable, so our body's ability to adjust gradually disappears and becomes both afraid of cold and heat; We have developed many drugs against bacteria and viruses. Taking too many of these drugs will lead to the degeneration of our own immune system.

From this point of view, while technology brings us many benefits, it also makes our bodies more and more "useless". However, scientific and technological progress is the trend of social development, and higher-end scientific and technological products will certainly appear in the future. At that time, how will human beings be affected?

The degradation of people in the future

With the continuous progress of science and technology, human beings in the future will degenerate more obviously in appearance. Generally speaking, human beings in the future should be more like a football.

First of all, because the internet was very developed at that time, everything could be done online, and people no longer needed to go out, so human beings didn't need legs and feet at all, and their functions gradually deteriorated; In addition, the thinking and calculation speed of robots at that time was tens of thousands of times faster than that of modern people. They will complete all human orders like loyal servants, so people who don't need to work will gradually degenerate their upper limbs. However, because people need to keep tapping the keyboard and mouse, people's fingers will be extremely developed and flexible.

The second thing that will degenerate is the human body. Modern people's eating habits have begun to tend to eat easily digestible food. In the future, advanced technology will be able to produce food that can be directly absorbed without digestion. At that time, the digestive system and excretory system of the human body were unnecessary. Therefore, the internal organs of the human body degenerate, and the body will of course shrink.

Of course, in order to control such a high-tech future world, although the human brain is locked by computers in memory and calculation, it must be very developed in imagination, abstract thinking and logical thinking. So in the future, human beings are completely degraded limbs and bodies with a big head, which looks like a football.

However, mankind's desire for progress is endless. Science and technology will further develop. By that time, humans no longer need to control computers through keyboards and mice, but only need to use consciousness. At that time, the computer could capture the brain waves from the human brain in time. So no matter what human beings want to do, as long as they move their thoughts in their brains, the computer will automatically receive the signals sent by human beings. By then, human beings will have no need to contact with the outside world at all. At that time, human beings may only have an invisible and intangible consciousness.

Will mankind really develop to that stage? Was the human being at that time still the human being we understand now? Maybe only time can answer this question.