Is it thanks to "women" that humans are now able to speak?

Is it thanks to "women" that humans are now able to speak?
A while ago, Mr. Sugiyama introduced me to a really interesting book.
"Opera Conductor in a Country with Aphasia" (Neurologist reveals the mysterious workings of the brain)
There is a book called "The Power of the Five Elements." It was published in 2001, so it's quite old.
http://www.amazon.co.jp/%E5%A4%B1%E8%AA%9E%E3%81%AE%E5%9B%BD%E3%81%AE%E3%82%AA%E3%83%9A%E3%83%A9%E6%8C%87%E6%8F%AE%E8%80%85%E2%80%95%E7%A5%9E%E7%B5%8C%E7%A7%91%E5%8C%BB%E3%81%8C%E6%98%8E%E3%81%8B%E3%81%99%E8%84%B3%E3%81%AE%E4%B8%8D%E6%80%9D%E8%AD%B0%E3%81%AA%E5%83%8D%E3%81%8D-%E3%83%8F%E3%83%AD%E3%83%AB%E3%83%89-%E3%82%AF%E3%83%AD%E3%83%BC%E3%82%A2%E3%83%B3%E3%82%BA/dp/4152083344/ref=sr_1_1?ie=UTF8&qid=1404858846&sr=8-1&keywords=%E5%A4%B1%E8%AA%9E%E3%81%AE%E5%9B%BD%E3%81%AE%E3%82%AA%E3%83%9A%E3%83%A9%E6%8C%87%E6%8F%AE%E8%80%85
The author is a master of this field, on a par with Oliver Sacks.
Just by looking at diseases that originate in the brain, it is generally possible to tell which part of the brain is affected.
We can speculate. Or rather, there are various brain diseases that we do not know about.
It was just very interesting to know.
For example, one day, you suddenly can no longer understand the language...
Or one day, you may be able to converse but not be able to recognize letters at all...
There seem to be many such mysterious symptoms all over the world.
It seems that brain science, or neuroscience, is evolving by examining the brains of people with such diseases.
Because it was coming from a leading expert in the field, it was more persuasive than anything anyone else could have said.
However, I don't like the title, so I would never have read it if Mr. Sugiyama hadn't told me about it.
It was a book. Thanks to Mr. Sugiyama.
It is often said that what made us human was bipedal walking, the use of tools, and our large brains.
This book makes the order of these events clear. First, humans began to walk on two legs.
⇒ As a result, the pelvis became smaller ⇒ Because childbirth is difficult, the brain is kept small at birth
Out of necessity (this is called juvenility) ⇒ Juvenility has made humans more juvenile than other animals.
It became necessary for them to spend their early childhood in an overwhelmingly weak state. ⇒ However, this period was long.
Therefore, and by the mother's close care during this period, humans are able to acquire complex language.
⇒This allowed them to think in a more complex way ⇒As a result, they were able to make tools
It became so.
That seems to be the case. It was very logical and I found myself nodding in agreement many times as I read it.
It is often said that the genetic difference between chimpanzees and humans is about 1%.
However, the size of the brain of chimpanzees at birth is already quite large.
By the time they reach adulthood, they only grow 28% of their original size, compared to 300% for humans.
Also, it takes chimpanzees two weeks after birth for their necks to become strong enough to support their heads, while humans take 20 weeks.
There is a 10-fold difference. What may seem like a disadvantage in the race to survive will actually improve your "deep thinking ability" in the long term.
The answer seems to be that this led to the acquisition of new products, which had a huge impact.
The doctor has seen many boys and girls who seem to have been raised by wolves from birth.
Of course, when they are found, they cannot speak. However,
All children who are identified before puberty are able to learn the language easily, but those who are identified after puberty are
The child was found to be unable to learn even one word of language.
This difference appears to be due to the fact that brain development is completed between the ages of 12 and 13.
This is true for language and for musical ability as well. If you want to become a great violinist,
It doesn't really matter whether you start at age 3, 4, or 11.
However, it seems that the chances of becoming a top-class player for the first time after the age of 13 are almost zero.
It is possible to learn a second language after the age of 13, but there are some exceptions to this rule for learning before that.
Despite the difficulty, it is difficult to reach the point where one can speak the language as fluently as if it were one's first language.
What was interesting was the description of the Neanderthals.
Although they had larger bodies and larger brains, the degree of brain immaturity seemed to be very low.
Therefore, it seems that he was able to understand simple language, but not complex thinking.
It is written. This book claims that no Neanderthal DNA remains to this day,
Recent studies suggest that about 2% of modern human DNA still contains traces of Neanderthals.
It is now clear that modern humans and Neanderthals lived in the same place at the same time.
However, if the mother is modern and the father is Neanderthal,
Because babies have large brains compared to their small pelvises, both mothers and children often die during childbirth.
I'm just guessing. I've never heard anything like this before.
I've heard that Neanderthals lived in groups less often than modern humans.
Because their language and thinking abilities were inferior to those of modern people, they were unable to cooperate and live in groups.
Maybe it didn't work out.
Lastly, it was a really interesting book and satisfied my intellectual curiosity.
Furthermore, regarding "Why did they start walking on two legs?" I have read before
The book "BORN TO RUN" fits me best. If you read this book as well, you will understand even more.
I think it's interesting.
http://matsuosekkei.blog85.fc2.com/blog-entry-1781.html