Are all humans descendants of one mother?

Whether our skin is black or white or we speak different languages, all of humanity is descended from the same mother.
All human beings, regardless of race, can be said to be brothers and sisters.
Then this question arises:
How is that possible? Around 150,000 to 200,000 years ago, among Homo sapiens living in Africa, there was a mother who could be considered an ancestor of modern humans.
She was the mother of all mankind, commonly referred to as 'Mitochondrial Eve'.
Mitochondria are tiny organelles found in almost all eukaryotic cells that produce the energy needed for cell function.
Of course, a man's sperm and a woman's eggs also contain mitochondria.


However, when a man and a woman mate and fertilization occurs, the mitochondria in the head of the sperm are all destroyed by the egg.
Therefore, all living things are inherited through the maternal line, with only the female mitochondria remaining and passed down from daughter to daughter.
Based on these characteristics, tracing back mitochondria has led to the discovery that they can be traced back to the mother of all humans who lived approximately 150,000 to 200,000 years ago, and that ancestral mother is called 'Mitochondrial Eve'.


So, all human beings, regardless of race, are descendants of one mother and are of the same blood.
There is no need to be picky, they are all relatives.
Wars that occur over territorial disputes, ethnic conflicts, etc. are no different from fighting between brothers.
Racism is a stupid thing to do, like spitting in your own face while lying down.
Some readers may find this information unrelated, but others may be completely unaware of it.
No matter which page you open, this book is full of interesting topics that stimulate intellectual curiosity.
The subject matter is weighty, but the content is appropriately deep and easy to understand.

All animals evolve, but humans in particular have been able to reign supreme over all animals through several groundbreaking evolutionary processes.
For example, the core elements of human evolution include upright walking on two feet, the use and development of tools, a dramatic increase in brain capacity, hunting and gathering, the disappearance of body hair, the use of language, the use of fire, and constant movement.
So what was the driving force behind this fundamental evolution? What, exactly, drove such a groundbreaking evolution? It was humanity's unique mating ritual: sex.

(syncopation)
As humans began to walk upright on two feet, men and women were able to face each other.
The male genitals, which were not very visible, became clearly visible, and when women, like other animals, mated in the doggy position, their buttocks, which had attracted the male's attention, became invisible, they evolved to have large breasts similar in shape to their buttocks.
And the woman's lips resembled a vagina laid sideways.
Not only that, it became possible to have a missionary position, where the woman lies down and the man climbs on top of her body to mate.
As the man and woman pressed their bodies together and looked at each other closely, their intimacy and bonding increased significantly, and the delicate caressing further stimulated their sexual urges.
Additionally, as their brain capacity increased, they developed self-awareness, unlike animals, and began to perceive the amazing 'pleasure' that can only be obtained from mating.
This was an absolutely amazing experience.

--- From "The driving force of evolution is mating"

About 2 million years ago, humans finally took their true form as Homo erectus began to stand upright and walk on two feet.
They obtained their food by hunting and gathering.
Men hunted to obtain meat, while women obtained plant foods such as fruits, roots, and nuts.
Men who went out hunting had to persistently pursue their prey, such as wild boars or rabbits, without letting go and had to capture them at all costs.
It's about focusing only on the target without paying attention to anything else.
In contrast, women had to search all over the place to find berries and nuts and search here and there to find plant foods.
So once they found a place rich in berries or nuts, they had to remember that place to continue obtaining food.
In conclusion, men have a goal-oriented nature and women have a direction-oriented nature.

--- From "Goal Orientation and Direction Orientation"

Is there intelligent life on Earth? World-renowned British physicist Dr. Stephen Hawking has declared, "There is intelligent life on Earth."
Moreover, almost all space scientists believe that there is intelligent life out there.
'Intelligent life' refers to a life form that has superior intelligence like humans on Earth and can think rationally, judge, decide, and plan.
In fact, the size of the universe is so vast that it is beyond our imagination, and there are countless stars and planets.
Among those enormous planets, there are countless planets whose climate and other environments are considered similar to Earth's.
It is only natural to assume that intelligent life could exist among them, just like on Earth.
Of course, it is a guess, but it is difficult for anyone to deny such a fact.


However, even if intelligent life exists in outer space, numerous problems arise regarding accidental encounters or intentional contact with Earthlings.
First of all, the distance between planets is too far.
The size of space is infinite.
Once outside the solar system, even the closest planets would have to travel hundreds, thousands, or even tens of thousands of light years or more at the speed of light.
It is a distance that our science cannot even imagine and cannot possibly reach.
There are approximately 100 billion planets in the Milky Way galaxy alone, 50 billion of which are rocky planets like Earth.
In particular, the space in the galaxy that is relatively close to Earth and has various environmental conditions similar to Earth, making it possible for life to exist, is called the Goldilocks Zone or Habitable Zone.
Even in this Goldilocks Zone, there are a whopping 500 million planets.
Earth has been transmitting regular radio waves to this area for over 30 years, but there has been no response, and no meaningful transmissions from space have been detected.

--- From "Is there intelligent life on Earth?"

'Memory' is the act of preserving or recalling things experienced, witnessed, or acquired in the past by engraving them in one's mind.
In short, memory is the brain's ability to store and retrieve all the information it acquires.
Because the brain has the ability to store information, it is capable of thinking, judging, deciding, choosing, learning, predicting, and imagining (inferring).
The brain has the function of forgetting along with the function of remembering.
Forgetting, the opposite of remembering, is forgetting something or a fact that you remember.
Forgetting has its problems, but it also has its advantages.
Forgetting allows us to forget memories that fade over time or trivial things that we didn't think were important, to forget old knowledge or information so we can acquire and learn new things, and to gradually forget painful experiences so we can maintain a sense of calm.
Our minds are healthy only when these memories and forgetting are in harmony.

(syncopation)
In this way, various factors such as individual differences in memory and forgetting, disease, psychology, and prejudice affect our memories.
In addition, the habit of thinking self-centeredly in one's own favor also distorts the accuracy of memory.
Also, memory varies greatly depending on each person's intellectual level, status and position, education, occupation, environment, gender, etc.
Accordingly, the experiences are different and the information and knowledge remembered are also very different.
Additionally, the level and value of information to be remembered and the amount of information stored in the brain differ from person to person.
When recalling such memories, it makes a big difference in judgment, perspective, and level.
Therefore, it is natural that our memories contain more errors and mistakes than objective accuracy.
Ultimately, it can be said that human memory is never trustworthy.
Moreover, our inaccurate memories can easily distort any fact or truth.

--- From "Is Human Memory Reliable?"