Why did man evolve to walk on two legs, isn t it faster to have four?

This is because according to the living environment of human beings, it is necessary to pick the fruits of the trees on the upper limbs that need to walk underneath, and it is formed after a long period of evolution. Four-legged walk fast, but can't pick the fruit on it.

Because the tool age required people to work with two hands free to make stone tools, and at the same time to maintain balance and walk independently, it evolved into two legs.

Human ancestors were two-legged, how could there be four-legged? Humans are advanced animals, and they have the advantage of having two legs, which makes them more agile.

No, that's how humans evolved. Crawling on all fours has the advantage of limbs, walking upright on both legs has the advantage of standing upright, and the results of human evolution are not changed by what humans think and think, and natural selection makes humans walk upright.

The lower limb structure of the "Lucy Girl" fossil more than 4 million years ago has been close to the state of upright walking, and some of the fossils that are a little further ahead are also closer to apes.

Some friends have asked, why do you want to come down if you have food and drink in the trees and you can avoid the natural enemies, this is to ignore a problem, survival competition not only exists between the populations of different species, but also exists within the populations of the same species, the amount of food in a forest is limited, and the survival competition makes human beings have to go down the trees, so it can be said that the original "humans" are losers.

Although walking upright is not conducive to the protection of the human spine, it also has many advantages, standing high and seeing far away is conducive to finding natural enemies in the distance, and it is also conducive to picking fruits from trees.

Although the four-legged animal has a fast sprint ability, it is not without disadvantages compared to humans, just considering the running of this one thing is biased, the strength of human athleticism lies in the persistence, the structure of the long stride of the lower limbs and the soles of the feet makes it possible for humans to have a good cushion when running, thanks to the strong thermoregulation system of human beings, no long-distance running ability of land creatures can compare with humans.

After all, living creatures are not only running this kind of behavior, human beings also have brains, which is the most powerful **, the composition of the earth's organisms determines that human beings have the highest IQ, although in history human beings were almost extinct by beasts, diseases and other factors, but human beings still rely on their advantages including intelligence.

Human beings can walk on two legs, they can free their hands and carry out effective productive labor, thus exercising their brains, evolving their brains more and more intelligently, ensuring that human beings can better adapt to the natural environment, so as to evolve highly intelligent creatures.

Walking on four legs is relatively fast, but human hands and feet are not only used for walking, hands can create a lot of tools, which is more beneficial to human survival.

No, with the evolution of human beings, it is more convenient to walk on both feet, and it also frees up both hands, and can make many advanced tools, which promotes the progress of human society.

The most successful step in man's evolution is to walk on all fours and on two legs, and when he stands up, he broadens his horizons, frees his hands, uses his hands to make tools, and gradually grows up in exercise, breaking away from beasts and becoming the master of the world.

Because human beings have evolved to walk on two legs, they can free their hands, use tools, and create human civilization, so they have evolved to walk on two legs.

It is true that walking on four legs is more labor-saving, but there is also a certain reason why humans have evolved into two legs, after evolving into two legs, we have freed our hands, we can do more things with our hands, we can invent and create, and we can also work labor, which can not be done by four-legged animalsAnd after the evolution into two legs, the brain is fully supported, and the brain capacity has become larger, and we will be smarter, after all, human beings want to develop not by speed and effort, but by our smart brains and hard-working hands.

Walking on two legs is really effortless, and the speed is very slow, just look at the four-legged animals, almost all four-legged animals run faster than us, in terms of speed we are indeed not opponents at all, but this is the result of our evolution, which shows that this is the most suitable for us,The reason why we are superior to animals is because we are smarter, we know how to make tools with our hands, and it is because of this that our ancestors survived in ancient times, which were full of all kinds of beasts, some of which are now extinct, but we still live in this land.

In fact, this is because we walk on two legs, and we can have such advanced science and technology now, but also thanks to our brains and hands, if it is not like this, we may be no different from other animals, which is why we have evolved this wayIn addition, after walking upright, our legs are stronger, our lower limbs are more developed, and our spine is harder, but this is also to support our brain, and after walking upright, we are more efficient.

Walking upright allows us to see higher and wider, which allows us to see what is going on around us earlier, so that we are safe and do not have to take the wrong roadWalking upright also reduces our body's energy consumption, and the benefits are really numerous.

It is inevitable that people will evolve to walk on two legs, and first walking upright will free the hands and allow them to play their maximum role. Secondly, walking upright will increase intelligence, and finally, it will increase one's efficiency by more than one notch.

Why did man evolve to walk on two legs, isn't it faster and less labor-saving to have four?

From the point of view of running, four-legged animals have an absolute advantage, no matter what kind of wild animals, except for those that are particularly slow, the others are much faster than humans, but as far as the creatures born on the earth are concerned, humans are the existence of crushing all species, of course, this is directly related to walking upright!

1. Compared with animals, how weak is the running speed of human chickens?

The fastest speed of human beings, Bolt's speed in 100 meters is about 9.58 seconds, which is about 100 kilometers and hours, and among the animals running on all fours:

The speed of the wolf is about 60 kilometers per hour

The speed of the antelope is about 70-100 kilometers per hour

Cheetahs travel at speeds of about 110-130 km/h

I'm sure you must have a feeling that you can't even catch up with the turtle?

Second, it is a more important existence than running away

Humans can stand out on the earth not because they run fast, if they just run, then the cheetah is obviously the uncrowned king of the earth, but now it is humans who dominate the earth, and it is obvious that our trump card is not to run, but more importantly, the head! But it's a by-product of walking upright!

To be more precise, humans did not really walk upright until the time of Australopithecus 5.5 million years ago, although there may be several factors that led to humans walking upright, such as:

1. Food is scarce, and the ancient ape population travels from the trees to the trees in search of food

2. There are far more threats on the ground than on trees, so the observation range of upright walking is obviously farther

3. With the coordination and cooperation of the division of labor of the ancient ape population, the probability of using hands will be higher, and the function of hands and feet will gradually be divided!

From the changes in brain volume of Australopithecus-Homo homo-Homo erectus-early Homo sapiens (Neanderthals)-late Homo sapiens (Crummanon), this is related to the high division of labor between hands and feet! Because the liberation of the hands will have more fine chemicals waiting for the flexible hands to complete, which is very beneficial to the functional evolution of the brain!

Stone tools made by early humans for various functions.

There is also the use of fire, although it is extremely difficult to verify the exact age of human use of stone tools and fire, but it is undoubtedly of epoch-making significance for human evolution, and even modern society itself is based on the use of fire!

From this point of view, what human beings have lost is the ability to run with limited help in evolving to a higher level, or even dragging their feet! But what you have is the ability to make tools, refine operations and improve the level of civilization with a larger brain capacity, if you have to choose again, would you rather run away with a low IQ, or a high-IQ head? The flower planter answered for you, obviously a high-IQ head is more important, but you should pay attention to exercise, for example, this noble head does not have a strong physical support, presumably the experience of friends with a variety of experiences is really much less!

In the process of evolution, although human beings have lost the ability to run on four legs, they have learned to make tools, and in this way, the whole is developing in the direction of progress.

Human beings have two legs and two hands that have evolved slowly over tens of millions of years, and humans do not need to run fast, but need a pair of dexterous hands, and a pair of dexterous hands can make many useful tools.

In nature we see four-legged animals running faster and with less effort than humans. But the reason why human beings are called the highest animals is that we can be more creative than other animals, and hands-on is the basis of our creativity.

This is because people need to free their hands so that they can make tools, so that they can resist the harm caused by other animals to humans, which is conducive to human survival.

The ancestors of human beings were apes, and the earliest discovery by archaeologists was about 1.7 million years ago. Since then, human beings have gradually evolved from apes to humans, taking on the appearance of humans, hunting and fishing, and living in groups. Today, humans are the highest living beings in the world.

It stands to reason that four-legged walking is faster, so why did humans evolve to walk on two legs? The biggest difference between humans and animals is labor, and humans have their own thinking, thus becoming the largest biomass in the world. <>

There is no doubt that four-legged animals do move faster. If a two-legged human is in a race against a four-legged leopard, lion, or tiger, the human is the slowest in speed. But what if humans continue to be four-legged and run faster than tigers and lions?

Then the ape is just an animal, a member of the reptiles. Humans are more advanced than animals because they are constantly evolving and know how to think. We are constantly changing ourselves and improving ourselves to adapt to the environment.

People who walk upright on two legs evolve the other two extra legs into hands that hold food and make food, and people know how to work with their hands to build tools to survive. Instantly changing from a state of adapting to the environment to a state of transforming the environment, this is what human beings are. Human beings have led this society and the world into the era of civilization by virtue of their own ideas and wisdom.

For example, China is a big country with a long cultural history of thousands of years. We have entered a semi-colonial and semi-feudal society from a feudal society, and finally to a socialist society, which has ushered in a better life today. I believe that in the future, under the leadership of the Communist Party, we will enter the communist society and have a better life.

Today, human beings use the power of science and technology to explore whether there are other creatures beyond this earth, and send probes to Mars to search. In recent years, Tiangong-2 has been docked in space. We are witnessing that human beings are using their wisdom to explore the mysteries of the universe.

Because it is necessary to evolve two legs to facilitate eating.

This is natural evolution, two legs will be more convenient, four legs are not very good-looking, and not very convenient.

I think that's very hurtful, so people don't recommend it.

This is a kind of human evolutionary process, and there is nothing special about it.

We only have to look at newborns to see some signs that human ancestors used to live in trees. Place your fingers under your baby's toes and they will instinctively curl their little toes to grasp. In trees, primate babies cling to their mothers and branches from birth.

If they don't, they will fall and die.

Human ancestors may have been separated from the evolutionary path of orangutans about 10 million years ago, but the knee joint of an orangutan is strikingly similar to that of modern humans. According to Robin Crompton, an anthropologist at the University of Liverpool, and Susannah Thorpe, a primatologist at the University of Birmingham, this suggests that bipedals originated much earlier than was previously recognized. Over the course of human evolution, the African climate has undergone many cycles, each time changing the composition of plants.

There is no single well-defined and permanent change in plant composition to provide the impetus for the basic lifestyle shift from quadrupedal to bipedal walking.

Yes, the four legs can run faster, but they can't develop labor, and labor opens up creation, so humanity can progress.