Abstract Objects
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Abstract Objects

In metaphysics, the distinction between abstract and concrete refers to a divide between two types of entities. Many philosophers hold that this difference has fundamental metaphysical significance. Examples of concrete objects include plants, human beings and planets while things like numbers, sets and propositions are abstract objects.[1] There is no general consensus as to what the characteristic marks of concreteness and abstractness are. Popular suggestions include defining the distinction in terms of the difference between (1) existence inside or outside space-time, (2) having causes and effects or not, (3) having contingent or necessary existence, (4) being particular or universal and (5) belonging to either the physical or the mental realm or to neither.[2][3][4] Despite this diversity of views, there is broad agreement concerning most objects as to whether they are abstract or concrete.[1] So under most interpretations, all these views would agree that, for example, plants are concrete objects while numbers are abstract objects.

Abstract objects are most commonly used in philosophy and semantics. They are sometimes called abstracta in contrast to concreta. The term abstract object is said to have been coined by Willard Van Orman Quine.[5] Abstract object theory is a discipline that studies the nature and role of abstract objects. It holds that properties can be related to objects in two ways: through exemplification and through encoding. Concrete objects exemplify their properties while abstract objects merely encode them. This approach is also known as the dual copula strategy.[6]

In philosophy

The type-token distinction identifies physical objects that are tokens of a particular type of thing.[7] The "type" of which it is a part is in itself an abstract object. The abstract-concrete distinction is often introduced and initially understood in terms of paradigmatic examples of objects of each kind:

Examples of abstract and concrete objects
Abstract Concrete
Tennis A tennis match
Redness Red light reflected off of an apple and hitting one's eyes
Five Five cars
Justice A just action
Humanity (the property of being human) Human population (the set of all humans)

Abstract objects have often garnered the interest of philosophers because they raise problems for popular theories. In ontology, abstract objects are considered problematic for physicalism and some forms of naturalism. Historically, the most important ontological dispute about abstract objects has been the problem of universals. In epistemology, abstract objects are considered problematic for empiricism. If abstracta lack causal powers or spatial location, how do we know about them? It is hard to say how they can affect our sensory experiences, and yet we seem to agree on a wide range of claims about them.

Some, such as Ernst Mally,[8] Edward Zalta[9] and arguably, Plato in his Theory of Forms,[9] have held that abstract objects constitute the defining subject matter of metaphysics or philosophical inquiry more broadly. To the extent that philosophy is independent of empirical research, and to the extent that empirical questions do not inform questions about abstracta, philosophy would seem especially suited to answering these latter questions.

In modern philosophy, the distinction between abstract and concrete was explored by Immanuel Kant[10] and G. W. F. Hegel.[11]

Gottlob Frege said that abstract objects, such as numbers, were members of a third realm,[12][13] different from the external world or from internal consciousness.[1]

Abstract objects and causality

Another popular proposal for drawing the abstract-concrete distinction contends that an object is abstract if it lacks any causal powers. A causal power has the ability to affect something causally. Thus, the empty set is abstract because it cannot act on other objects. One problem with this view is that it is not clear exactly what it is to have causal power. For a more detailed exploration of the abstract-concrete distinction, see the relevant Stanford Encyclopedia of Philosophy article.[9]

Quasi-abstract entities

Recently, there has been some philosophical interest in the development of a third category of objects known as the quasi-abstract. Quasi-abstract objects have drawn particular attention in the area of social ontology and documentality. Some argue that the over-adherence to the platonist duality of the concrete and the abstract has led to a large category of social objects having been overlooked or rejected as nonexistent because they exhibit characteristics that the traditional duality between concrete and abstract regards as incompatible.[14] Specially, the ability to have temporal location, but not spatial location, and have causal agency (if only by acting through representatives).[15] These characteristics are exhibited by a number of social objects, including states of the international legal system.[16]

Concrete and abstract thought in psychology

Jean Piaget uses the terms "concrete" and "formal" to describe two different types of learning. Concrete thinking involves facts and descriptions about everyday, tangible objects, while abstract (formal operational) thinking involves a mental process.

Abstract idea Concrete idea
Dense things sink. It will sink if its density is greater than the density of the fluid.
You breathe in oxygen and breathe out carbon dioxide. Gas exchange takes place between the air in the alveoli and the blood.
Plants get water through their roots. Water diffuses through the cell membrane of the root hair cells.

See also

References

  1. ^ a b c Rosen, Gideon (2020). "Abstract Objects". The Stanford Encyclopedia of Philosophy. Metaphysics Research Lab, Stanford University. Retrieved 2021.
  2. ^ Honderich, Ted (2005). "abstract entities". The Oxford Companion to Philosophy. Oxford University Press.
  3. ^ Craig, Edward (1996). "Abstract objects". Routledge Encyclopedia of Philosophy. Routledge.
  4. ^ Abrams, Meyer Howard; Harpham, Geoffrey Galt (2011). A Glossary of Literary Terms. ISBN 978-0495898023. Retrieved 2012.
  5. ^ Armstrong, D. M. (2010). Sketch for a systematic metaphysics. Oxford: Oxford University Press. p. 2. ISBN 9780199655915.
  6. ^ Zalta 1983, p. 33.
  7. ^ Carr, Philip (2012) "The Philosophy of Phonology" in Philosophy of Linguistics (ed. Kemp, Fernando, Asher), Elsevier, p. 404
  8. ^ Ernst Mally - The Metaphysics Research Lab
  9. ^ a b c Rosen, Gideon. "Abstract Objects". In Zalta, Edward N. (ed.). Stanford Encyclopedia of Philosophy.
  10. ^ KrV A51/B75-6. See also: Edward Willatt, Kant, Deleuze and Architectonics, Continuum, 2010 p. 17: "Kant argues that cognition can only come about as a result of the union of the abstract work of the understanding and the concrete input of sensation."
  11. ^ Georg Wilhelm Friedrich Hegel: The Science of Logic, Cambridge University Press, 2010, p. 609. See also: Richard Dien Winfield, Hegel's Science of Logic: A Critical Rethinking in Thirty Lectures, Rowman & Littlefield Publishers, 2012, p. 265.
  12. ^ Gottlob Frege, "Der Gedanke. Eine logische Untersuchung," in: Beiträge zur Philosophie des deutschen Idealismus 1 (1918/19), pp. 58-77; esp. p. 69.
  13. ^ Cf. Popper's three worlds.
  14. ^ B. Smith (2008), "Searle and De Soto: The New Ontology of the Social World." In The Mystery of Capital and the Construction of Social Reality. Open Court.
  15. ^ E. H. Robinson, "A Theory of Social Agentivity and Its Integration into the Descriptive Ontology for Linguistic and Cognitive Engineering", International Journal on Semantic Web and Information Systems 7(4) (2011) pp. 62-86.
  16. ^ E. H. Robinson (2014), "A Documentary Theory of States and Their Existence as Quasi-Abstract Entities," Geopolitics 19 (3), pp. 1-29.

Sources

  • Zalta, Edward N. (1983). Abstract Objects: An Introduction to Axiomatic Metaphysics. Synthese Library. 160. Dordrecht, Netherlands: D. Reidel Publishing Company. ISBN 978-90-277-1474-9.

External links


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