An integrative level, or level of organization, is a set of phenomena

emerging ''Emerging'' is the title of the only album by the Phil Keaggy Band, released in 1977 on NewSong Records. The album's release was delayed due to a shift in record pressing plant priorities following the death of Elvis Presley. The album was re ...

from pre-existing phenomena of a lower level. The levels concept is an intellectual framework for structuring reality. It arranges all entities, structures, and processes in the universe, or in a certain

field of study Field may refer to: Expanses of open ground * Field (agriculture), an area of land used for agricultural purposes * Airfield, an aerodrome that lacks the infrastructure of an airport * Battlefield * Lawn, an area of mowed grass * Meadow, a grass ...

, into a hierarchy, typically based on how complex their organization is. When arranged this way, each entity is three things at the same time: It is made up of parts from the previous level below. It is a whole in its own right. And it is a part of the whole that is on the next level above. Typical examples include

life Life is a quality that distinguishes matter that has biological processes, such as signaling and self-sustaining processes, from that which does not, and is defined by the capacity for growth, reaction to stimuli, metabolism, energ ...

emerging from non-living substances, and

consciousness Consciousness, at its simplest, is sentience and awareness of internal and external existence. However, the lack of definitions has led to millennia of analyses, explanations and debates by philosophers, theologians, linguisticians, and scien ...

emerging from

nervous system In biology, the nervous system is the highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body. The nervous system detects environmental changes th ...

Levels

The main levels usually acknowledged are those of

matter In classical physics and general chemistry, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic partic ...

mind The mind is the set of faculties responsible for all mental phenomena. Often the term is also identified with the phenomena themselves. These faculties include thought, imagination, memory, will, and sensation. They are responsible for various m ...

, and

society A society is a group of individuals involved in persistent social interaction, or a large social group sharing the same spatial or social territory, typically subject to the same political authority and dominant cultural expectations. Socie ...

. These are called ''strata'' in philosopher

Nicolai Hartmann Paul Nicolai Hartmann (; 20 February 1882 – 9 October 1950) was a Baltic German philosopher. He is regarded as a key representative of critical realism and as one of the most important twentieth-century metaphysicians. Biography Hartmann was ...

ontology In metaphysics, ontology is the philosophical study of being, as well as related concepts such as existence, becoming, and reality. Ontology addresses questions like how entities are grouped into categories and which of these entities exis ...

. They can be further analyzed into more specific ''layers'', such as those of particles, atoms, molecules, and rocks forming the material stratum, or those of cells, organisms, populations, and ecosystems forming the life stratum. The sequence of levels is often described as one of increasing

complexity Complexity characterises the behaviour of a system or model whose components interaction, interact in multiple ways and follow local rules, leading to nonlinearity, randomness, collective dynamics, hierarchy, and emergence. The term is generall ...

, although it is not clear whether this is always true: for example,

parasitism Parasitism is a Symbiosis, close relationship between species, where one organism, the parasite, lives on or inside another organism, the Host (biology), host, causing it some harm, and is Adaptation, adapted structurally to this way of lif ...

emerges on pre-existing organisms, although parasites are often simpler than their originating forms.

Philosophies

Ideas connected to integrative levels can be found in the works of both

materialist Materialism is a form of philosophical monism which holds matter to be the fundamental substance in nature, and all things, including mental states and consciousness, are results of material interactions. According to philosophical materialis ...

philosophers and anti-materialist ones. Some philosophers and scientists have argued against certain ideas about levels of organization (see ).

References

* * * * * * * * * * * * * * * * * * * * * * * Foreword by

Joseph Needham Noel Joseph Terence Montgomery Needham (; 9 December 1900 – 24 March 1995) was a British biochemist, historian of science and sinologist known for his scientific research and writing on the history of Chinese science and technology, in ...

. * * * * *

Arguments against levels of organization

* See the section
"2.4 Levels skepticism and deflationary accounts"
* * * * * * * * * {{metaphysics-stub Ordering Emergence __NOTOC__

Levels

Philosophies

See also

References

Arguments against levels of organization