From cosmic creation, to natural selection, to social animals, our existence is a miracle, there are too many accidents in 20 billion years, but all of this seems to happen skillfully, and all of it happens only for our existence.
<h1 class= "pgc-h-arrow-right" > cosmic creation</h1>
About 10 billion to 20 billion years ago, the universe was created from the Big Bang singularity, which is infinitely hot and dense, and the internal structure is like the black holes that scientists are currently studying. Matter, energy, time, and space arose with the Big Bang, and over a long period of time, until we see it today.
Where did the universe's first heat and particles come from? Why did it start with a bloat? Why continue to expand above the collapse threshold? Why is the universe so uniform and smooth? Why do particles eventually evolve into the carbon and oxygen needed for life?
There is no definitive answer to these questions, completely beyond all the laws of science now, because all the laws of science fail at the Big Bang singularity. But one thing is certain, life was born precisely because the universe came into being in this way.
Scientists have found that the universe can be born in many ways, but other ways do not have the conditions for life, so it is not clear whether all this happened by chance or has long been arranged in the dark. The universe gradually lowered in temperature as it expanded, and slightly dense regions collapsed under gravity to form nebulae, which after a series of changes formed galaxies that we can observe now.
Earth is a planet in the solar system that orbits the Sun. Formed about 4.5 billion years ago, the Solar System is a small galaxy in the outer circle of the Milky Way, and the Milky Way is one of about a trillion galaxies in the observable universe. The universe is larger than we could have imagined, and there are possibilities for multiple universes.
Whether other galaxies have intelligent life is still being explored, but it takes many conditions to form life on Earth, such as a suitable location from the sun, the stable heat of the sun, the safety of the orbit, the formation of the atmosphere, and the liquid water needed for life. From the universe to the solar system to the earth, there are a series of conditions and evolutions that ultimately lead to the emergence of life.
We can understand that all the changes in the universe over the past 10 billion years are for the emergence of life, because even if the expansion rate of the universe is less than one billionth, or the charge of the electrons has changed very slightly, we humans cannot retrace the history of the universe today.
< h1 class="pgc-h-arrow-right" > natural selection</h1>
About 3.8 billion years ago, organisms appeared in the Earth's oceans, producing the earliest primitive life, mainly algae and bacteria, after a long evolution, about 2.5 million years ago, humans appeared humans, and about 70,000 years ago, a "Homo sapiens" of human beings developed rapidly to become the masters of life on Earth today.
In this long 3.8 billion years, from inorganic matter to organic matter, from single-celled organisms to mammals, life from scratch, this is a long evolutionary process, and life in the evolution process follows the law of "natural selection, survival of the fittest". All living things do not arise at once, but are constantly evolving or mutating, gradually branching out, forming multiple species.
The characteristics of evolution or mutation determine that each individual life can only survive for a certain period of time, and after completing the mission of breeding and raising the next generation, individual life does not have the natural meaning of survival. Life has the opportunity to mutate or evolve in the process of generational reproduction, subject to natural selection, and the survival of the fittest.
The long-term existence of individual life is contrary to the theory of evolution and is bound to become extinct at some stage. Evolution is a universal law of nature, not subject to the will of individual life, so there is life and death, which is predestined when life was first born. Life is a relay race, "the back wave of the Yangtze River pushes the front wave, and one generation is stronger than the next." For the natural nature of life is to find ways to live and reproduce.
<h1 class = "pgc-h-arrow-right" > social animals</h1>
Why did Homo sapiens ultimately win over natural selection and stand at the top of the food chain? In addition to walking upright, increasing brain volume, and using these main factors in the fire, the most critical is the sociality of "Homo sapiens". Sociality develops language, division of labor, vision, rules, order, ideas, values, states, cultures, etc., and these abstract concepts have the most powerful power.
They unite people to form a set of operating mechanisms that push the whole of humanity forward. One man is weak, inferior to many animals in nature, but the whole of human beings is the most powerful. Man is a social animal, we live in nature and are also based in society, and everyone is a part of society.
All living things are subject to the laws of nature, and man is subject to the laws of society. From birth to death, a person is always affected and shaped by society. The future destiny of mankind must also be based on sociality, and it must be continuously strengthened, just like our country put forward the value of "building a community with a shared future for mankind", that is, paying attention to the future development of mankind.
Man comes from the natural world, life has evolved from the emergence of more than 3 billion years, and the emergence of human society is only tens of thousands of years, which is only a flash in the entire history of life. In the long process of evolution, the natural attributes of life have long been engraved in DNA, and this is all about survival.
For example, why do small children and even many adults like to eat sweets? Sugar is the main source of energy for the human body, although now the human body has no shortage of sugar, but in the long history of human development, long-term gathering and hunting still can not obtain enough food, the desire for sweets or sugar and access is engraved in the DNA, passed down from generation to generation, which is in line with the natural attributes of life.
It is unreasonable to say that human nature is inherently evil or human nature is inherently good, and everyone is born with natural attributes, does not care about good and evil, and later accepts social shaping, and good and evil are only the judgment of later social values. The natural property of life is survival and reproduction, and the means is to obtain sufficient resources.
Plants get sunlight, nutrients, and water; animals get food; humans get wealth. Throughout the history of human development, it is a history of resource acquisition and competition, as well as a history of balance between natural attributes and social attributes. Everyone is in a state of intertwining natural and social attributes throughout their lives.
Although social laws only existed for a few tens of thousands of years, they soon allowed human beings to occupy the top of the food chain, especially since the Industrial Revolution, social productivity has been greatly improved, various innovations have emerged, and human society has achieved great prosperity. We are well aware that the social attributes of human beings can only go further if they are constantly strengthened.
Man is an intelligent animal, and if he is only based on natural attributes, or even uses social laws to serve the natural attributes of individuals, it is detrimental to personal destiny or social development. Although nature has chosen human beings with social nature, social attributes are regulating and modifying natural attributes.
In the long history of the development of life, individual life is fleeting, and if it is based on the development of the entire human society, the evolution of life and the birth of the universe, there is no eternal birth and eternal death. Natural selection determines the continuous replacement of life and life and death, through evolution or mutation, so that the advantages are accumulated continuously, so that the overall life can be continued, so the individual life serves the whole life.
There are too many possibilities in the future. Evolution or mutation makes it impossible for future humans to be unrecognizable, and even produce new civilizations, such as machine civilizations, because artificial intelligence is the creation and invention of human beings; the life of the sun is about 5 billion years, and the earth will be destroyed when the sun is destroyed; perhaps the earth may be extinct or have migrated to the outer planets due to human over-extraction of resources and environmental degradation before the destruction of the sun;
The rate of expansion of the universe is below the gravitational threshold, the universe begins to collapse, eventually returning to the singularity before the Big Bang; perhaps the universe starts from the Big Bang singularity again... All of this is completely beyond our imagination, too far away for us, so how should we treat our own lives now?
From cosmic creation to natural selection to social animals, the evolution of life over 10 billion to 20 billion years is a miracle. No matter what, keep a heart that explores the unknown and pursues far away. Although we are still in a corner of the vast universe, the universe gave birth to life, nature chose human beings, and our existence must have its own internal reasons.
With the continuous development of science and technology, traveling in space to explore the mysteries of the universe is not a dream. We exist to find out why we exist!