Concept

Family resemblance

Overview

Family resemblance (German: Familienähnlichkeit) is a philosophical idea made popular by Ludwig Wittgenstein, with the best known exposition given in his posthumously published book Philosophical Investigations (1953). It argues that things which could be thought to be connected by one essential common feature may in fact be connected by a series of overlapping similarities, where no one feature is common to all of the things. Games, which Wittgenstein used as an example to explain the notion, have become the paradigmatic example of a group that is related by family resemblances. It has been suggested that Wittgenstein picked up the idea and the term from Friedrich Nietzsche, who had been using it, as did many nineteenth century philologists, when discussing language families.

The first occurrence of the term family resemblance is found in Arthur Schopenhauer (1788–1860; The World As Will and Representation §§17, 27, 28) who attributed the term to the school developed by Friedrich Wilhelm Joseph von Schelling (1775–1854). As demonstrated, Schopenhauer's polemical target is Henrik Steffens (1773–1845), a student of Schelling. The next occurrence appeared in a note from 1930, commenting on Oswald Spengler's ideas. The notion itself features widely in Wittgenstein's later work, and in the Investigations it is introduced in response to questions about the general form of propositions and the essence of language – questions which were central to Wittgenstein throughout his philosophical career. This suggests that family resemblance was of prime importance for Wittgenstein's later philosophy; however, like many of his ideas, it is hard to find precise agreement within the secondary literature on either its place within Wittgenstein's later thought or on its wider philosophical significance.

Since the publication of the Investigations, the notion of family resemblance has been discussed extensively not only in the philosophical literature, but also, for example, in works dealing with classification where the approach is described as "polythetic", distinguishing it from the traditional approach known now as "monothetic". Prototype theory is a recent development in cognitive science where this idea has also been explored. As the idea gained popularity, earlier instances of its occurrence were rediscovered e.g. in 18th-century taxonomy, in the writings of Lev Vygotsky or Władysław Tatarkiewicz.

Overview adapted from Wikipedia (CC BY-SA 4.0; see the article history for authors).

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Lifted by the latter, philosophical thinking leaps from possibility to possibility, and these for the time being are taken as certainties; and now and then even whilst on the wing it gets hold of certainties. An ingenious presentiment shows them to the flier; demonstrable certainties are divined at a distance to be at this point. Especially powerful is the strength of Fancy in the lightning-like seizing and…
Friedrich Wilhelm Nietzsche, Early Greek Philosophy & Other Essays Collected Works, Volume Two
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The _Idea_ is the unity that falls into multiplicity on account of the temporal and spatial form of our intuitive apprehension; the _concept_, on the contrary, is the unity reconstructed out of multiplicity by the abstraction of our reason; the latter may be defined as _unitas post rem_, the former as _unitas ante rem_. Finally, we may express the distinction between the Idea and the concept, by a comparison, thus…
Arthur Schopenhauer, The World as Will and Idea
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In reality, there exists between religion and true science neither relationship nor friendship, not even enmity: they dwell in different spheres. Every philosophy that lets the religious comet gleam through the darkness of its last outposts renders everything within it that purports to be science, suspicious. It is all probably religion, although it may assume the guise of science.--Moreover, though all the peoples…
Friedrich Wilhelm Nietzsche, Human, All Too Human
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Family resemblance

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