Goddess' Super Master

Up to now, Professor Kang's so-called no theme speech has a theme, that is, there is nothing special about human beings.

"Many species can be classified into the same family. For example, tigers, lions and kittens belong to the cat family. Whether foxes, wolves or dogs, they belong to the canine family."

Professor CONDA continued his lecture.

"As long as they are all animals of the same family, as long as they keep going up, they can find a male or female ancestor. Today's big lion and your kitten can be traced back to the same ancestor 25 million years ago."

At this point, we all understand that human beings, like other animals, are just a species and belong to a family.

"There is nothing special about human beings. Human beings belong to a certain family, but human beings don't want to admit that human beings hope to be a separate family, that is, anthropoid family, and don't want any distant relatives and close neighbors, but this is not the case. Whether we accept it or not, the anthropoid family we belong to has many cousins and cousins of the same family, a bunch of apes, whether it's black or not Orangutans, gorillas, or orangutans are all our relatives, especially chimpanzees. That is definitely the relationship between cousins. In other words, tens of thousands of years ago, a female ape gave birth to two daughters. One became the ancestor of all chimpanzees and the other became the grandparents of all humans. "

When Professor Kangda talked about this, the students on the scene became very serious.

"Do you know why we dominate the world?" Professor CONDA knocked himself on the head. "Yes, this is the place."

"Generally speaking, the average brain capacity of 60 kilogram mammals is 200 cubic centimeters, but we have 12 to 14. In ancient times, the brain capacity of humans at that time was also 600 cubic centimeters. Natural selection enables humans to survive and stand at the top of the food chain because of the increasing brain capacity." Professor CONDA is in high spirits.

Of course, some people say that man is not a creature at the top of the food chain. Yes, simply speaking, man is not qualified to stand at the top of the biological chain, but man can do it by using his brain. Dare you ask what species can compete with human beings now?

People use their wisdom and are not afraid of any species. How many bullets can a powerful creature carry? Even if it's thick skinned, can it carry a rocket launcher? Man made nuclear weapons can even destroy the whole earth. What qualifications do other species have to compete with humans for the top of the food chain?

Man can exterminate other species and even himself, but other species can't.

Why are today's humans deeply obsessed with their IQ? Why do you think the higher the IQ, the better? That's why.

"But have you ever thought about it? Other animals are also evolving. Why are there no dogs who can calculus? Why are there no pigs who know chemistry? Why are only people evolving such a large proportion of thinking organs?" Professor Kangda asked again.

The students of non Biology College are at a loss. Some students of Biology College are also thinking. Only one person gives the answer.

"Because a huge brain is also a huge burden."

Professor Kangda nodded with satisfaction: "that's right!"

The students in the audience once again focused on Professor Kangda.

"That's very good. A huge brain is indeed a huge burden. The structure of the brain is very fragile, which is not conducive to activities, let alone protect it with a huge and hard skull." Professor Kangda smiled: "does anyone have a concept of brain energy consumption?"

"Even when people are resting and inactive, the energy consumption of the brain accounts for a quarter."

"That's right!" Professor Kangda said, "although the brain only accounts for 3% of the total weight of human body, the consumption can account for 25%. It is still at rest and inactive, which is different from other animals. The consumption is very small." Professor Kangda said: "Because the human brain consumes a lot, people in ancient times have to pay more. The first point is to spend more time looking for food. The second point is muscle degradation. Muscle degradation is not what humans want. It is because humans allocated the energy required by muscles to brain neurons. Therefore, chimpanzees could not be 'reasonable' in ancient times Links beat humans. Of course, if humans fight with chimpanzees, they will be killed and torn up. "

There was an uproar under the stage.

"There are gains and losses. If human beings want to have a powerful brain, they must pay the price of degradation of other physical functions. That's why people engaged in mental work will become weaker and weaker if they don't go to the gym for effective and systematic training, while people engaged in physical activities don't need to go to the gym to exercise and can have muscles, because people engaged in mental work are in the gym Unconsciously, you have transformed the energy your muscles need into your brain, so your body will become thinner and fatter. As long as you can't exercise systematically in the gym, this is inevitable. "

Professor Kangda's words made many people nod frequently.

Because what he said really makes sense.

Although people who engage in mental work seem to sit there all day without moving, their bodies will also feel tired. People who do not engage in this kind of work obviously can't understand the "sense of fatigue". They will think that mental work is much easier than physical work. In fact, it's not easy.

There are only three kinds of people in the world, those who use their brains, those who sell their physical strength and those who accomplish nothing.

If a person doesn't want to accomplish nothing, either with his brain or with his strength, he doesn't want to pay anything, he must get nothing.

"The reason why people can successfully stand at the top of the food chain and rule the world today is that they have paid a very painful price." Professor Kangda sighed softly: "While evolving the brain, we need to walk upright on two legs in order to improve our vision. In this way, we can empty our hands to do other things, produce and make tools. Just standing up and walking makes human beings pay a lot of pain."

Speaking of human evolution, I'm really sad.

Many students were silent.

Human beings have paid great hardships to succeed.

Now, if you don't want to work hard, how can you succeed?

The whole human race is like this. It is the same for individuals. There will never be a harvest without paying.

"After millions of years of evolution, our ancestors developed a skeleton that walked on four limbs and had a relatively small head. How easy is it to adjust this skeleton to stand upright and support a large head?" Professor Kangda said: "Therefore, in order to be able to look far and use both hands flexibly, our ancestors must develop into self-reliance, which is why people today also have the root causes of back pain and cervical spondylosis."

Hearing this, many people unconsciously touched their cervical spine.

Now most people have mild or severe cervical spondylosis and low back pain.

"This is the price of becoming a 'ruler'!" Professor Kangda said seriously: "what's more terrible is that walking upright will narrow the hips and limit the width of the female birth canal. What's more, humans are still evolving and the baby's brain is getting bigger and bigger, so it's normal to die in childbirth. Therefore, humans have evolved into a 'premature' species."

Many people bowed their heads and whispered to discuss whether Professor Kangda was right.

In fact, whether it is correct or not, there is a certain reason, because only premature birth can make the baby's head smaller and softer, and the birth will be more smooth. Therefore, humans will choose to give birth in advance. This is a natural choice and is needed for species evolution.