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Holism

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Holism is an interdisciplinary concept regarding the nature of systems. It proposes that systems possess properties as wholes that are distinct from their component parts. This idea is often summarized by the aphorism, "The whole is greater than the sum of its parts." When a system reveals qualities that its individual parts do not have, these are called emergent properties.

Animal cell structure en
Animal cell structure en

Holism stands in direct opposition to reductionism. Reductionism is a dominant philosophy in science which suggests systems contain no unique properties beyond their parts. Proponents of holism argue that searching for emergent properties is essential to understanding reality.

Jan Smuts was a key figure in defining this concept. He coined the term "holism" in his 1926 book, *Holism and Evolution*. Smuts proposed that holism represented at least three distinct features of reality. First, he claimed that every measurable physical or psychological thing possesses a nature as a whole. He used examples such as atoms, cells, or an individual's personality. He specifically argued that a person's body and mind are not completely separate. Instead, they connect to represent the holistic nature of a human being.

Smuts also viewed holism as the primary cause of evolution. He rejected the idea that evolution was merely a random accident. He also argued it was not driven by a transcendent force like a God. Smuts criticized thinkers who used Darwinian natural selection to support an accidental view of nature. He perceived evolution as a process where nature corrects itself both creatively and intentionally.

Darwin's finches by Gould
Darwin's finches by Gould

He described this as a system's tendency to respond to environmental stressors. In this view, parts work together to move the whole into more advanced states.

In the field of physics, holism is often linked to quantum mechanics. This involves the concept of nonseparability in physical systems. In classical physics, the behavior of individual parts represents the whole. However, quantum theory resists this kind of reductive analysis. For example, two spatially separated quantum systems can become "entangled." This means they are nonseparable, so one system cannot be analyzed without the other.

Feynman Diagram Gluon Radiation
Feynman Diagram Gluon Radiation

This exploration provides insight into deep ontological problems regarding the nature of being.

Physicists approach holism through different lenses, such as methodology and metaphysics. Methodological holism is the claim that systems are best understood by their whole properties. A reductionist might try to explain a liquid by studying its individual molecules or electrons. A methodological holist believes this approach is misguided. They argue that important advances come from new concepts at macroscopic levels. These concepts are not logically dependent on microscopic constituents. Metaphysical holism is divided into three specific varieties. Ontological holism suggests systems are not merely their physical parts. Property holism suggests systems have properties independent of their parts. Nomological holism suggests systems follow laws beyond those of their parts.

Theoretical physicist David Bohm provided a literal support for ontological holism. He believed a complete description of the universe requires more than a list of particles. He argued a physical quantum field must exist to guide particle trajectories.

In contrast, Niels Bohr held an epistemological view of holism. Bohr believed that an observational apparatus is part of the system being studied. He argued that properties like position and momentum are properties of whole systems. However, Bohr stated these properties are only meaningful during observation. Bohm disagreed, claiming these properties must exist regardless of whether they are observed.

Holism also applies to linguistics through a concept called semantic holism. This theory suggests that the meaning of individual words depends on a web of other words. If the meaning of one word changes, the meaning of every other word in the web changes as well. This is the opposite of atomism, which states word meanings are independent.

Shift of microbial-host coevolution from separation theories to a holistic approach
Shift of microbial-host coevolution from separation theories to a holistic approach

There is also a middle view called meaning molecularism. This suggests a change in one word only affects a small set of other words. Semantic holism faces criticism regarding the stability of meaning. Critics argue it conflicts with compositionality, where meaning comes from the structure of an expression's parts.

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File:Darwin's finches by Gould.jpg
Darwin's finches by Gould.jpg
File:Feynman Diagram Gluon Radiation.svg
Feynman Diagram Gluon Radiation.svg
File:Animal cell structure en.svg
Animal cell structure en.svg
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