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TEL : 0942627277 - 0904392219.DEVELOPMENT AND EXPANSION OF THE FULCRUM LAW BY TEACHER PHẠM HÙNG SƠN THE FULCRUM LAW - Axioms and Theorems of a Neutral System.
PART I. THE AXIOMS Article 2. Axiom 1. Every
system has a Fulcrum.
INTRODUCTION.
Throughout the history of the development of human
knowledge, humanity has continuously sought answers to a question that seems
very simple but is profoundly deep:
What makes a system able to exist, operate, and develop
sustainably?
Physicists study gravitational force. Biologists study the
laws of life. Economists study the market. Sociologists study institutions.
Philosophers study the nature of existence.
Although approaching from different perspectives, the deeper
one goes, the more one realizes that behind every law there exists a
foundational factor that keeps the entire system from disintegrating.
If that factor is lost, the system falls into chaos. If that
factor weakens, the system weakens. If that factor disappears completely, the
system ceases to exist.
In mechanics, that factor is manifested as the fulcrum. In
astronomy, it is the center of gravity. In biology, it is the controlling
genome. In society, it is the common value system. In human beings, it is
conscience and morality.
The names may differ, but the essence is the same: it is the
Fulcrum.
Therefore, the Fulcrum Law does not begin from a speculative
hypothesis, but from an observation that can be verified in almost all fields
of nature and life.
From that observation, we state the first Axiom:
Every system that wants to exist must have a Fulcrum.
This is not only a philosophical proposition but also a
universal principle that can be verified from physics, biology, nature,
society, to the spiritual life of human beings.
I. THE CONCEPT OF FULCRUM.
In everyday language, "fulcrum" is often
understood as the place where force is applied to create motion.
The simplest example is the lever. A wooden bar, no matter
how long, cannot lift a heavy object if there is no fulcrum. What creates the
power of the lever is not the wooden bar itself, but the fulcrum placed beneath
it.
The scientist Archimedes once said: "Give me a fulcrum,
and I will move the Earth."
That famous statement not only describes a mechanical
principle but also reveals a universal truth:
Power does not come from force, but from the point where
force is applied.
From this mechanical principle, the Fulcrum Law expands the
concept of "fulcrum" into a more universal concept.
Definition.
The Fulcrum is the central, stable factor that has the
ability to maintain the structure, direction, and existence of a system.
According to this definition, the Fulcrum does not
necessarily have to be a point in space. It can be:
What is important is not its form of expression but its
function.
An element is only called a Fulcrum when it simultaneously
performs three basic functions:
First, it maintains the stability of the system. If the
Fulcrum is lost, the system will quickly fall into an unbalanced state.
Second, it creates the ability to connect. The Fulcrum is
the place where individual components converge into a unified whole. If that
connection is lost, the system will disintegrate into separate parts.
Third, it directs development. The Fulcrum not only keeps
the system in existence but also points out the direction of movement, helping
the system adapt to environmental changes while still preserving its own
identity.
These three functions appear in every system, from a tiny
atom to a vast civilization.
Therefore, the concept of Fulcrum is not a concept exclusive
to mechanics or philosophy, but a foundational principle capable of unifying
the way we view nature, society, and humanity.
That is also the foundation for proving the first Axiom:
Every system has a Fulcrum.
II. PROVING THE AXIOM THROUGH PHYSICS.
If an axiom is truly universal, it must first hold true in
the material world, because physics is the science that studies the most basic
laws of nature.
Over the past three hundred years, from classical mechanics
to modern physics, many seemingly different theories have been built. However,
when viewed at the essential level, they all show a common law:
There is no material system that exists without a central
factor that maintains the stability of the system.
That is precisely the manifestation of the Fulcrum.
1. Fulcrum in classical mechanics.
The most intuitive example is the lever. A long lever bar
placed on the ground cannot amplify force at all. Only when a fixed fulcrum
appears can a small human force lift an object dozens or hundreds of times
heavier.
What is noteworthy is: If you increase the length of the
lever arm but remove the fulcrum, the entire system becomes ineffective. If you
increase the applied force but there is no fulcrum, the object still cannot be
lifted.
What determines the efficiency of the system is not just the
force, but the relationship between the force and the fulcrum.
In other words: The Fulcrum does not create energy, but
determines the ability to harness energy.
This observation will appear many times in other fields of
nature.
2. Fulcrum in the Solar System, Galaxy, and celestial
systems.
Modern astronomical observations show that the
"Fulcrum" law does not only appear in the Solar System but is
repeated at almost every level of the universe.
In the Solar System, planets orbit the Sun under the
influence of gravity. It is the Sun’s gravitational field that keeps the entire
system structurally stable for about 4.6 billion years.
If the Sun disappeared, the planets would lose their
gravitational reference point, orbits would cease, and the Solar System would
no longer exist as a whole.
But the law does not stop there. The Sun itself is only one
of hundreds of billions of stars in the Milky Way. The entire Solar System,
together with other stars, is moving around the center of the Galaxy at a speed
of about 220 km/s and completes one orbit in about 225–250 million years. This
shows that even the Solar System is a component of a larger system, maintained
by the gravitational field of the entire galaxy.
On an even larger scale, galaxies do not exist in isolation.
They cluster into galaxy clusters and superclusters, in which each system has a
mass center that governs the motion of its members. Although the forms of
expression differ, every level of organization exists thanks to a linking
center that maintains the stability of the system.
Thus, from the Solar System to the Galaxy, from the Galaxy
to galaxy clusters, we observe a repeating law:
Each system exists around a governing center, a convergence
point, or a gravitational field that prevents the system from disintegrating.
In astronomy, these are called the center of mass,
gravitational field, or galactic center.
Atoms have the fulcrum of the atom. Molecules have the
fulcrum of the molecule. Planets have the fulcrum of the planet. The Solar
System has the fulcrum of the Solar System. The Galaxy has the fulcrum of the
Galaxy. Galaxy clusters have the fulcrum of the galaxy cluster.
Each larger system is a component of an even larger system.
From the perspective of the Fulcrum Law, these are all
different manifestations of the Fulcrum.
This shows that the Fulcrum is not a phenomenon exclusive to
mechanics, but a principle of organization that runs through from the smallest
material systems to the vastest cosmic structures.
If every system has a Fulcrum, then the greatest question of
philosophy and science is no longer “Does the Fulcrum exist?”, but “What is the
ultimate Fulcrum of all reality?”
3. Fulcrum in the atom.
The seemingly solid objects around us are actually made up
of atoms. An atom consists of a nucleus at the center and electrons distributed
in quantum states around it. The mass of the atom is almost entirely
concentrated in the nucleus. It is the nucleus that creates the electric field
that maintains the structure of the atom.
Deeper still, within the nucleus, positively charged protons
should repel each other very strongly. If there were only electromagnetic
force, the nucleus would disintegrate instantly. What holds them together is
the strong nuclear force – the strongest fundamental force in nature over very
short ranges. Thanks to this force, the nucleus maintains stability, and thus
atoms exist and matter is formed.
Thus, even at the most microscopic level, the existence of
matter depends on a central factor that maintains connections. That is
precisely the manifestation of the Fulcrum in the subatomic world.
4. Fulcrum in physical equilibrium.
An object stands still when the total forces acting on it
are zero. A bridge exists for hundreds of years because the entire internal
force system is always in equilibrium. A building hundreds of meters tall does
not collapse because the center of gravity, foundation, and load-bearing
structure form a stable system.
If the foundation weakens, even if the upper structure
remains intact, the entire building can still collapse. In construction
engineering, people always reinforce the foundation before expanding the scale
of the project. No engineer starts from the roof.
This reflects a universal principle: The stability of a
system always begins with the Fulcrum.
5. Fulcrum in the equilibrium systems of nature.
Modern physics shows that all systems tend toward a state of
dynamic equilibrium. A pendulum, after oscillating, will gradually return to
the equilibrium position. A gas will distribute evenly in a closed container.
An electric current will reach a stable state when voltage and resistance are
balanced. A star maintains its shape for billions of years thanks to the
balance between gravitational force pulling inward and radiation pressure
pushing outward.
If one of these two factors is lost, the star will either
collapse into a neutron star or black hole, or explode into a supernova.
Thus, what maintains the existence of the system is not a
single force, but a state of equilibrium organized around a governing center.
That is the deeper meaning of the Fulcrum.
6. Conclusion from physics.
From the simple lever to the atomic structure, from
buildings and bridges to the Solar System and stars, physics shows a unified
law:
No system can exist without a central factor that maintains
stability.
The name of that factor may differ:
But in essence, they all perform the same function:
Maintaining structure, creating connections, and ensuring the existence of the
system.
Therefore, from the perspective of physics, we can affirm
that:
Every material system exists thanks to a Fulcrum.
This is the first piece of evidence confirming Axiom 1 of
the Fulcrum Law.
III. PROVING THE AXIOM THROUGH NATURE.
If physics shows us that the Fulcrum is the condition for
matter to exist, then nature proves that the Fulcrum is the condition for life
to be sustained.
Nature does not exist by chance. Over billions of years of
evolution, every sustainable ecosystem has formed around factors that play a
central role in regulating, connecting, and maintaining balance.
That is precisely the Fulcrum of nature.
1. The fulcrum of a tree.
A mature tree can grow tens of meters tall, cast shade over
a wide area, and withstand storms for many decades. What humans see is the
trunk, branches, leaves, and fruit. But the part that determines the life of
the tree lies beneath the ground. That is the root system.
The root system performs many functions simultaneously:
If the root system is destroyed, even if the trunk is still
green and healthy, the tree will gradually wither and die.
The life of the tree is not determined by the largest, most
beautiful, or most visible part, but by the part that quietly keeps the entire
system alive. The root system is the Fulcrum of the tree.
2. The fulcrum of a forest.
A forest is not a random collection of millions of trees. It
is an extremely complex ecosystem. In the soil, tree roots connect with
symbiotic fungal networks, creating systems for exchanging water, minerals, and
chemical signals between trees. Ancient trees not only nourish themselves but
also support young trees in their growth.
If the dominant species are lost, the entire ecological
structure of the forest will change. Many animal species disappear. The water
cycle changes. The soil erodes. The local climate gradually changes.
This shows that every ecosystem exists thanks to components
that play a central role in maintaining the balance of the entire system.
3. Fulcrum in the food chain.
In nature, no species exists independently. Plants absorb
energy from the Sun. Herbivores use plants as their source of life. Carnivores
regulate the number of herbivores. Microorganisms decompose organic matter to
return nutrients to the soil. That cycle is closed.
If an important link is removed, the entire system will be
affected. Ecological history has recorded many such cases. When top predators
disappear, the number of herbivores increases dramatically, plants are
devastated, land degrades, and eventually the animal population itself declines
due to lack of food.
The Fulcrum of the ecosystem lies not only in one individual
but in the balanced structure of the entire chain of relationships.
4. The fulcrum of a river.
A river is not just flowing water. Its existence depends on
the entire watershed. Headwater forests retain water. Soil absorbs rainwater.
Groundwater layers regulate flow. Tributary systems supplement water according
to the seasons.
If the headwater forests are destroyed, rainwater is no
longer retained. Floods occur in the rainy season. Severe water shortages occur
in the dry season. The river gradually loses its ability to self-regulate.
Here, the headwater forests and the watershed are the
ecological Fulcrum of the river.
5. The fulcrum of the Earth.
Life on Earth exists thanks to the harmonious coordination
of many seemingly independent conditions:
If just one of these foundational conditions is broken, the
living environment will change profoundly.
This shows that life does not rely on a single factor, but
on a system of Fulcrums working together to maintain a state of balance.
6. Lessons from nature.
Nature teaches humanity a very simple but profoundly deep
principle:
The most important thing in a system is often not the
largest, most prominent, or most visible thing. The most important thing is the
factor that quietly keeps all other parts able to coexist.
Trees stand thanks to roots. Forests exist thanks to
ecological balance. Rivers live thanks to headwater forests. Life on Earth
exists thanks to the delicate balance of countless foundational conditions.
Wherever there is a sustainable system, there is always one
or more Fulcrums quietly operating.
Therefore, nature once again confirms the first Axiom of the
Fulcrum Law:
Every system that wants to exist must have a Fulcrum.
When the Fulcrum is broken, the system weakens; when the Fulcrum is lost, the
system gradually disintegrates.
At this point, we can draw a law that runs through
everything:
Physics shows that the Fulcrum creates structure. Astronomy
shows that the Fulcrum creates orbits. Nature shows that the Fulcrum creates
balance.
These three conclusions are very beautiful because they
follow one another in logical sequence:
No Fulcrum → no structure. No structure → no orderly motion.
No orderly motion → no balance. No balance → the system disintegrates.
IV. PROVING THE AXIOM THROUGH BIOLOGY.
If nature shows that the Fulcrum is the condition for
ecosystems to maintain balance, then biology proves that the life of every
living organism is also built upon foundational Fulcrums.
From a simple cell to the human body, every living structure
exists thanks to regulatory centers that keep the entire system functioning as
a unified whole.
Without a Fulcrum, there is no life.
1. The fulcrum of the cell.
The cell is the basic unit of every living organism. In each
cell, thousands of chemical reactions occur every second. Those reactions are
not chaotic. They are controlled by genetic information contained in DNA.
DNA stores the entire blueprint of life. It determines what
proteins will be produced, how the cell will develop, when it will divide, and
how it will repair itself when damaged.
If DNA is severely damaged and not repaired, the cell will
lose its ability to function normally, or even die or develop into cancer
cells.
Thus, for the cell, DNA is not only a place to store
information but also the command center for all living activities.
From the perspective of the Fulcrum Law, DNA is one of the
fundamental Fulcrums of life at the cellular level.
2. The fulcrum of a living organism.
A mature organism consists of tens of trillions of cells.
The miracle is that this enormous number still functions as a unified whole.
What creates that unity?
It is the regulatory system. In higher animals and humans,
the nervous system and endocrine system continuously receive information,
process signals, and coordinate the activities of all organs.
The brain receives stimuli. The spinal cord transmits
signals. Endocrine glands secrete hormones to regulate growth, metabolism,
reproduction, and adaptation to the environment.
If this regulatory center is severely damaged, the entire
body will quickly lose its ability to coordinate. Even healthy organs will no
longer function harmoniously.
This shows: The Fulcrum of an organism does not lie in the
largest organ, but in the control system that keeps all organs directed toward
the common goal of maintaining life.
3. The fulcrum of internal balance (homeostasis).
One of the great achievements of modern biology is the
discovery of the principle of homeostasis. Human body temperature is always
maintained around 37°C. Blood sugar concentration, pH, water volume, and
electrolytes are all controlled within very narrow limits.
That stability is not a static state. It is a continuous
adjustment process. When it is hot, the body sweats to dissipate heat. When it
is cold, the body constricts blood vessels and shivers to generate heat. When
blood sugar rises, insulin is secreted to lower it. When blood sugar drops,
glucagon is released to raise it.
Thousands of regulatory mechanisms occur simultaneously to
keep the internal environment stable.
It is this state of homeostatic balance that is the
biological Fulcrum helping the body maintain life.
4. The fulcrum of the evolutionary process.
Evolution is not a chain of chaotic changes. Species can
only exist when they retain the foundational characteristics that ensure
adaptability. Individuals that adapt better will have a greater chance of
survival and pass on their traits to the next generation.
Over millions of years, natural selection not only creates
new changes but also preserves the most effective structures.
This shows that evolution always occurs on a stable
foundation. Without that foundation, all changes would become chaotic and life
could not continue to develop.
At this level, the Fulcrum does not prevent change. On the
contrary, it is the Fulcrum that makes change occur in an orderly manner and
toward higher chances of existence.
5. The fulcrum of life.
Observing the entire biological world shows a consistent
law. Each level of organization of life has its own regulatory center. Cells
have the genetic information system. Organs have functional control mechanisms.
Organisms have the nervous and endocrine systems. Populations have laws that
maintain balance. Ecosystems have biological cycles.
These Fulcrums are not separate but linked in multiple
layers, helping life to be both stable and adaptable to the constant changes of
the environment.
6. Conclusion from biology.
Modern biology shows that life is not maintained by the
strength of any single part. What determines it is the existence of regulatory
centers that keep the entire system operating as a unified whole.
The Fulcrum of life is therefore not only a material
structure but also an organizational principle that allows thousands of
billions of different components to coordinate harmoniously.
Therefore, biology continues to confirm the first Axiom of
the Fulcrum Law:
Every living system exists thanks to Fulcrums that
maintain structure, regulate activities, and ensure balance. When these
Fulcrums are broken, life weakens; when they are completely lost, life ends.
V. PROVING THE AXIOM THROUGH SOCIETY.
If physics proves that matter exists thanks to the Fulcrum,
if biology proves that life exists thanks to the Fulcrum, then human history
proves something no less profound:
Every civilization exists thanks to spiritual and social
Fulcrums.
No nation can endure solely through natural resources. No
people can develop long-term solely through military power. No organization can
be sustainable if it relies only on power.
What keeps society in existence is the common values that
all members believe in and protect together. That is the Fulcrum of society.
1. Family – the first cell of society.
Every civilization begins with the family. The family does
not exist merely through blood relations. What binds the members is love,
responsibility, sacrifice, and trust. Parents care for their children. Children
respect their parents. Siblings support one another.
It is these values that create the stability of the family
across generations. If these values are lost, the family will break apart even
if the house remains intact.
This shows: The Fulcrum of the family is not property. It is
not status. It is not power. The Fulcrum of the family is morality and family
bonds.
2. The fulcrum of an organization.
A business may possess very large capital. A school may have
modern facilities. A hospital may be equipped with advanced technology. But if
trust between people is lost, that organization will quickly weaken.
The history of management has proven many times: The most
sustainable organizations are not the richest ones, but those that have built a
common culture. Organizational culture creates loyalty. Loyalty creates
solidarity. Solidarity creates strength to overcome crises.
Thus, culture is the invisible Fulcrum of every
organization.
3. The fulcrum of a nation.
A nation is formed by territory, population, and
administrative apparatus. But history shows: Not every large country is
powerful. Not every resource-rich country develops.
What determines the long-term vitality of a nation is the
value system that the nation builds. That is the spirit of the rule of law.
That is civic responsibility. That is the tradition of solidarity. That is
patriotism. That is faith in justice.
When these values are preserved, the country can overcome
war, natural disasters, and crises. Conversely, when social trust is broken,
weakening begins from within, even if the country appears rich and powerful on
the surface.
The history of many great empires has proven this.
4. Lessons from the history of civilizations.
World history records many civilizations that once reached
peaks in military, economic, and technological terms. There were empires with
mighty armies. There were nations controlling vast territories. There were
economies that once dominated international trade. But many of them declined.
The immediate causes might be war, natural disasters, or
economic crises. However, looking deeper, people realize that collapse often
begins with the cracking of foundational Fulcrums:
When the spiritual Fulcrum is gone, material strength cannot
save the system from disintegration. That is a lesson repeated throughout human
history.
5. The fulcrum of civilization.
A civilization is not measured by the number of skyscrapers.
It is not measured by the scale of wealth. It is not measured by military
power. Those factors only reflect the level of material development.
What determines the longevity of a civilization is the
ability to maintain the foundational human values. Wherever people still
respect truth, justice, and compassion, civilization still has the ability to
develop. Wherever those values are replaced by greed, deceit, and violence,
decline is only a matter of time.
Therefore, the greatest Fulcrum of society does not lie in
wealth, but in the ethical value system preserved by the entire community.
6. Conclusion from sociology.
From family, organization, nation, to civilization, we
observe a unified law. Every social system exists thanks to an invisible
Fulcrum. That Fulcrum may be called:
The names may differ, but the function is always the same:
Keeping people able to live together in order, cooperation, and development.
Therefore, sociology continues to confirm the first Axiom of
the Fulcrum Law:
A society is truly sustainable only when it preserves its
value Fulcrum. When that Fulcrum weakens, every manifestation of crisis
will appear in turn; when the Fulcrum is lost, the disintegration of the system
is only a matter of time.
VI. SYNTHESIS AND AFFIRMATION OF THE AXIOM.
Through the above analyses, we can see a law that runs
through from matter to life, from nature to society and humanity.
At each level of existence, the form of expression of the
Fulcrum may differ, but its function is always unified.
In the material world, the Fulcrum manifests as
gravitational force, atomic nucleus, center of mass, or structures that keep
the system stable. In nature, the Fulcrum manifests as the balance of
ecosystems, cyclic processes, and connections that ensure the continuation of
life. In biology, the Fulcrum manifests as the genetic information system,
regulatory mechanisms, and the ability to maintain homeostasis. In society, the
Fulcrum manifests as morality, law, culture, trust, and common values that the
community respects together.
When it comes to human beings, the Fulcrum is no longer just
an external factor. It becomes an inner strength. That is conscience. It is
morality. It is ideals. It is faith. It is the aspiration toward Truth –
Goodness – Beauty.
It is this Fulcrum that directs thinking, governs actions,
and determines the personality of each person.
A person can lose wealth and still rise up. Can fail and
still continue forward. Can go through adversity and still maintain dignity.
What helps them overcome everything is not physical strength
or external power, but the inner Fulcrum.
From there, we can see a very clear development law of
nature and civilization:
Matter is held by force. Life is held by regulation. Society
is held by values. Human beings are held by the Fulcrum of the inner self.
These four levels are not separate. They form a continuous
chain of development. Force creates structure. Structure creates life. Life
creates society. Society creates conditions for humans to develop their
spiritual life. And spiritual life in turn determines the direction of
development of society, civilization, and how humans use the material power
they create.
Therefore, the Fulcrum is not only the condition for a
system to exist. The Fulcrum also determines the quality of that system’s
existence.
A correct Fulcrum creates a sustainable system. A wrong
Fulcrum leads the entire system off course. A lost Fulcrum causes the system to
gradually weaken and then disintegrate.
That is a law that applies not only to an object, a living
being, or a society. It is a law that repeats at every level of existence.
Therefore, after cross-referencing with the laws of physics,
astronomy, nature, biology, and society, we have sufficient grounds to state
the first Axiom of the Fulcrum Law:
Every system that wants to exist must have a Fulcrum.
The Fulcrum is the central factor that maintains structure,
creates connections, ensures balance, and directs the development of the
system.
When the Fulcrum is strengthened, the system develops. When
the Fulcrum weakens, the system weakens. When the Fulcrum is lost, the system
will disintegrate.
This is not the conclusion of a single science. It is the
result drawn from consistent observation of nature, life, society, and humanity
itself.
It is also the first foundational stone to build the entire
Neutral System.
From this Axiom, the subsequent axioms will no longer be
isolated statements, but will become logical consequences of the same unified
principle.
Because once we understand that the Fulcrum is the condition
of all existence, we must continue to answer bigger questions:
How is the Fulcrum formed? What makes the Fulcrum
sustainable? What causes the Fulcrum to weaken? And does there exist an
ultimate Fulcrum capable of converging and directing all systems in the
universe?
That will be the journey of the subsequent axioms and
theorems in the Neutral System.
“The Fulcrum Law” seeks the manifestation of the same
principle in each field:
On the surface, these are different languages. But if we
strip them down to their core functions, they all converge into one single
principle: every system needs a center to maintain existence, create
connections, maintain balance, and direct development.
Thank you for following. Please continue to follow: DEVELOPMENT
AND EXPANSION OF THE FULCRUM LAW BY TEACHER PHẠM HÙNG SƠN. THE FULCRUM
LAW - Axioms and Theorems of a Neutral System. PART I. THE AXIOMS. Article
3. Axiom 2. The Fulcrum directs the operation of energy.
Purpose. Explain: It is not energy that decides
first. It is the Fulcrum that determines the direction of energy movement.
Warm regards. Mrs. Tây Ninh.
BÀI ĐĂNG TRONG BLOG.
PHÁT TRIỂN VÀ MỞ RỘNG ĐỊNH LUẬT ĐIỂM TỰA CỦA THẦY PHẠM
HÙNG SƠN.
ĐỊNH LUẬT ĐIỂM TỰA - Những Tiên đề và Định lý của một Hệ
thống Trung Hòa.
BÀI 1. VÌ SAO NHÂN LOẠI CẦN MỘT HỆ THỐNG TRUNG HÒA?
https://dienbatnblog.blogspot.com/2026/06/bai-1-vi-sao-nhan-loai-can-mot-he-thong.html
ARTICLE 1. WHY HUMANITY NEEDS A NEUTRAL SYSTEM?
https://dienbatnblog.blogspot.com/2026/06/article-1-why-humanity-needs-neutral.html
第1篇。人類為何需要一個中和系統?
https://dienbatnblog.blogspot.com/2026/06/1.html
Bài 2. Tiên đề 1. Mọi hệ thống đều có Điểm Tựa.
https://dienbatnblog.blogspot.com/2026/07/bai-2-tien-e-1-moi-he-thong-eu-co-iem.html
PART I. THE AXIOMS Article 2. Axiom 1. Every system has a
Fulcrum.
https://dienbatnblog.blogspot.com/2026/07/part-i-axioms-article-2-axiom-1-every.html
第一部分 公理。 第2篇 公理1:任何系統都擁有支點。
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