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Family resemblance
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Family resemblance (German Familienähnlichkeit ) is a philosophical idea proposed by Ludwig Wittgenstein, with the most well known exposition being given in the posthumously published book Philosophical Investigations (1953) . The same point was made by Wladyslaw Tatarkiewicz in his 1933 article Postawa estetyczna, literacka i poetycka. Tatarkiewicz called it the domino resemblance. The idea itself takes its name from Wittgenstein's metaphorical description of a type of relationship he argued was exhibited by language.
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Encyclopedia
Family resemblance (German Familienähnlichkeit ) is a philosophical idea proposed by Ludwig Wittgenstein, with the most well known exposition being given in the posthumously published book Philosophical Investigations (1953) . The same point was made by Wladyslaw Tatarkiewicz in his 1933 article Postawa estetyczna, literacka i poetycka. Tatarkiewicz called it the domino resemblance. The idea itself takes its name from Wittgenstein's metaphorical description of a type of relationship he argued was exhibited by language. Wittgenstein's point was that things which may 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. Games, which Wittgenstein used to explain the notion, have become the paradigmatic example of a group that is related by family resemblances.
Family resemblance features widely in Wittgenstein's later work, and the notion itself is introduced in the Investigations 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.
Philosophical Context
The local context where the topic of family resemblances appears is
Wittgenstein's critique of language. In Philosophical Investigations §65-71 the plurality of language uses is compared to the plurality of games. Next it is asserted that games have common features but none is found in all of them. The whole argument has become famous under the heading 'language games'.
The larger context in which Wittgenstein's philosophy is seen to develop considers his uncompromising opposition to essences, mental entities
and other forms of idealism which were accepted as a matter of fact in
continental philosophy at the turn of the preceding century. In his
view the main cause for such errors is language and its uncritical use.
In the received view concepts, categories or classes are taken to rely
on necessary features common to all items covered by them. Abstraction is the procedure which acknowledges this necessity and
derives essences but in the absence of a single common feature it
is bound to fail.
Examples and quotes
Games are the main example considered by Wittgenstein in his text where
he also mentions numbers and makes an analogy with a thread. He develops
his argument further by insisting that in such cases there is not a
clear cut boundary but there arises some ambiguity if this indefiniteness can be separated from the main point.
In §66 Wittgenstein invites us to
The section mentions card games, board games, ball games, games like ring-a-ring-a-roses and concludes:
The following §67 begins by stating:
and extends the illustration
The problem of boundaries begins in §68
Formal models
There are some simple models
which can be derived from the text of §66-9. The most simple one, which fits Wittgenstein's exposition, seems to be the sorites type. It consists in a collection of items Item_1, Item_2, Item_3... described by features A, B, C, D, ...:
Item_1: A B C D
Item_2: B C D E
Item_3: C D E F
Item_4: D E F G
Item_5: E F G H
......... . . . .
In this example, which presents an indefinitely extended ordered family, resemblance is seen in shared features: each item shares three features with his neighbors e.g. Item_2 is like Item_1 in respects B, C, D, and like Item_3 in respects C, D, E. Obviously what we call 'resemblance' involves different aspects in each particular case. It is also seen to be of a different 'degree' and here it fades with 'distance': Item_1 and Item_5 have nothing in common.
An other simple model is described as:
Item_1: A B C
Item_2: B C D
Item_3: A C D
Item_4: A B D
It exhibits the presence of a constant degree of resemblance and the
absence of a common feature without extending to infinity.
Wittgenstein rejects the disjunction of features or 'properties', i.e. the set , as something shared by all items. He admits that a 'sharing' is common to all but deems that it is only verbal:
Notable Applications
- Morris Weitz first applied family resemblances in an attempt to describe art which opened a still continuing debate.
- Renford Bambrough proposed that 'Wittgenstein solved what is known as “the problem of universals”' and said of his solution (as Hume said of Berkeley’s treatment of the same topic), that it is “one of the greatest and most valuable discoveries that has been made of late years in the republic of letters”. His view provided the occasion for numerous further comments .
- Rodney Needham explored family resemblances in connection with the problem of alliance and noted their presence in taxonomy where they are known as a polythetic classification
- Eleanor Rosch used family resemblances in her cognitivist studies
Criticism and comments
Philosophical Investigations are the primary text used in discussing family resemblances even though the topic appears also in
other Wittgenstein's works, notably The Brown Book.Most contributions to the discussion are by people involved in philosophical research but concern with more pragmatic questions such as taxonomy or information processing sometimes motivates the comments.
The main focus for criticism is the notion of similarity which is
instrumental for family resemblance. A similarity is always found for
two arbitrarily selected objects or a series of intermediaries can link
them into a family. This problem has been known as underdeterminacy or
open ended texture. Admittedly infinity is only potential but for any
finite family some common element can be pointed especially if
relational properties are taken in consideration.
Wittgenstein's insistence that boundaries do not really exist but can
be traced arbitrarily has been described as conventionalism and more generally the acceptance of his conception has been seen to present a refined nominalism.
See also
External links
Lois Shawver's comments on Philosophical Investigations §65-9
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