Distinction (philosophy)

Distinction, the fundamental philosophical abstraction, involves the recognition of difference.[1]

For Pierre Bourdieu's book, see Distinction (book).

In classical philosophy, there were various ways in which things could be distinguished. The merely logical or virtual distinction, such as the difference between concavity and convexity, involves the mental apprehension of two definitions, but which cannot be realized outside the mind, as any concave line would be a convex line considered from another perspective. A real distinction involves a level of ontological separation, as when squirrels are distinguished from llamas (for no squirrel is a llama, and no llama is a squirrel).[2] A real distinction is thus different than a merely conceptual one, in that in a real distinction, one of the terms can be realized in reality without the other being realized.

Later developments include Duns Scotus's formal distinction, which developed in part out of the recognition in previous authors that there need to be an intermediary between logical and real distinctions.[3]

Some relevant distinctions to the history of Western philosophy include:

Distinctions in contemporary thought

Analytic–synthetic distinction

While there are anticipation of this distinction prior to Kant in the British Empiricists (and even further in Scholastic thought), it was Kant who introduced the terminology. The distinction concerns the relation of a subject to its predicate: analytic claims are those in which the subject contains the predicate, as in "All bodies are extended." Synthetic claims bring two concepts together, as in "All events are caused." The distinction was recently called into question by W.V.O. Quine, in his paper "Two Dogmas of Empiricism."

A priori and a posteriori

The origins of the distinction are less clear, and it concerns the origins of knowledge. A posteriori knowledge arises from, or is caused by, experience. A priori knowledge may come temporally after experience, but its certainty is not derivable from the experience itself. Saul Kripke was the first major thinker to propose that there are analytic a posteriori knowledge claims.

Notable distinctions in historical authors

Aristotle

Aristotle makes the distinction between actuality and potentiality.[4] Actuality is a realization of the way a thing could be, while potency refers simply to the way a thing could be. There are two levels to each: matter itself can be anything, and becomes something actually by causes, making it something which then has the ability to be in a certain way, and that ability can then be realized. The matter of an ax can be an ax, then is made into an ax. The ax thereby is able to cut, and reaches a new form of actuality in actually cutting.

Aquinas

The major distinction Aquinas makes is that of essence and existence. It is a distinction already in Avicenna, but Aquinas maps the distinction onto the actuality/potentiality distinction of Aristotle, such that the essence of a thing is in potency to the existence of a thing, which is that thing's actuality.[5]

Kant

In Kant, the distinction between appearance and thing-in-itself is foundational to his entire philosophical project.[6] The distinction separates the way a thing appears to us on the one hand, and the way a thing really is.

See also
  • Use-mention distinction – Difference between using a word and mentioning it
  • Type-token distinction – Distinguishing objects and classes of objects

References
  1. Sokolowski, Robert (1998-01-01). "The Method of Philosophy: Making Distinctions". Review of Metaphysics. 51 (3): 515–532.
  2. Copleston, Frederick (2003-06-12). History of Philosophy Volume 2: Medieval Philosophy. A&C Black. ISBN 9780826468963.
  3. Wengert, R. G.; Institute, The Hegeler (1965-11-01). "The Development of the Doctrine of the Formal Distinction in the Lectura Prima of John Duns Scotus". Monist. 49 (4): 571–587. doi:10.5840/monist196549435.
  4. Cohen, S. Marc (2016-01-01). Zalta, Edward N. (ed.). The Stanford Encyclopedia of Philosophy (Winter 2016 ed.). Metaphysics Research Lab, Stanford University.
  5. "Aquinas: Metaphysics | Internet Encyclopedia of Philosophy". www.iep.utm.edu. Retrieved 2017-04-05.
  6. Colin, Marshall (2013). "Kant's One Self and the Appearance/Thing-in-itself Distinction". Kant-Studien. 104 (4). ISSN 0022-8877.
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