오직 인간의 얼굴에만 없다는 것 | 생물 진화

0:00 People's facial expressions are different. Their faces are also diverse. Animals can be distinguished by their faces, but humans don't have prominent features. That's why they change their faces through surgery. If you compare animals and humans, there is a noticeable difference in their faces. It's the snout. People with protruding snouts don't speak well, but animals' snouts are a structure and an opportunity for humans. Among animals with faces, humans are the only ones with flat snouts. Even the letters of the animals closest to humans have wrinkles. Our ancestors also had protruding snouts. That's why when we draw enemies, we draw their snouts protruding. Why are only humans so flat? Aside from the mainstream, what is one of the most distinctive features of humans? It's that they walk upright, leaving both hands free.

0:46 Some monkeys can use both hands, but most of them use their feet. When filming, people prefer animals that are several times their size, even though their physical abilities are limited, because they use elaborate hand movements to answer calls or requests. In fact, humans are the only ones who can throw objects with precision. They say they are animals. Unlike humans who use tools, tigers choose with their mouths. They run fast with their strong physical abilities and bite down hard on wide areas. In order to properly sense the earthenware, a long snout is advantageous. Imagine the National Assembly on the floor right now. You have to push your face flat enough so that your nose touches the floor to eat. That's why people eat with both hands. Dogs and cats at night have long snouts that can easily pick up things on the floor and eat them. On the other hand, animals eat by sticking their heads down, so they don't see their surroundings well.

1:32 Fortunately, they can see their surroundings well because their snouts are long. If you look closely, you can see wild flowers. When cats or dogs eat, if there is even a little bit of a suspicious sound, they raise their heads and look around. Since people eat with their hands, they are easily visible to others, so they don't necessarily need long snouts. People can eat while doing other things. Look at office workers on the subway, eating hamburgers in a hurry on their way to work in the morning. This is the pinnacle of evolution. It makes me cry. Humans are very social animals, but thanks to their snouts, they can freely make various facial expressions and interact. This is reduced. There is something that has decreased with Julie, which is the eyebrow bone. Our eyebrow bone has become flat during the evolution process. Thanks to this, we can use our facial muscles more freely and communicate through more diverse expressions. It

2:23 is said that when a person understands the mood or intention of the other person, the eyebrows are more important than the eyes. After the eyebrow bone decreased and it became possible to express emotions through the eyebrows, our ancestors used the eyebrows to determine whether a person approaching from a distance was friendly or hostile. To this extent, eyebrows play a very important role in clinical practice. So according to an experiment at MIT, it is harder to recognize a person when their eyebrows are covered than when they are covered. For this reason, this line or people try to change their clinical practice by changing their eyebrows. In this pose, we learned about the human face. We find the faces of other animals unique. Even creatures without faces, such as jellyfish or sea creatures, escape. However, there is no animal with a face as distinctive as humans. Humans are animals that have evolved their faces tremendously due to social needs. And that face still exerts a tremendous influence in our society, and people are trying

3:11 hard to have better faces. To be [music]