Post-Cartesian theories of psychology or epistemology can be generally located in one of two competing paradigms-the work of the later Wittgenstein, Kuhn and others being exemplars of the first and the work of Popper, Campbell, Lorenz and others being exemplars of the second (Munz, 1985, 1987). The proponents of the first, "closed-circle theorists", who have worn incommensurability and relativism almost as a badge of enlightenment, look to sociology or social psychology as the basis for meaning and intentionality, while evolutionary or natural selection epistemologists, proponents of the second, look to biology, or, more particularly, to Darwinian evolutionary theory as the ground for the epistemic dimension.
Closed-circle theory finds roots in the functionalism
of Durkheim and Malinowski, and the "sociology of knowledge"
of Mannheim. Earlier roots go back to Marx and Engels' work on
ideology, and Spencer before. While the common thread to all
these various ancestors was the idea that social ordering determines
individual action, it should not be construed that all were closed-circle
theorists in the extremized post-modern form of Wittgenstein and
Kuhn.
Social systems, according to Durkheim (1895/1938), were said
to have a reality outside the existence of individual humans that
acts to determine their meaningful relations and intentional behavior.
In explicit reaction to "psychologism", the idea that
cultural systems are rational constructions of individual intentional
agents, as well as the prevalent evolutionary views of history
or culture, Malinowski held that human social or cultural systems
were effectively closed circles where the parts all function to
maintain the whole. Given that the circular relations of such
a system were seen to refer back to themselves-that the function
of the system is to maintain itself-they were said to exist sui
generis. Everything is explained with respect to something else
that happens internal to the circular relations of the system.
Wittgenstein further extremized this view by transposing it into
a sociological version of the Cartesian circle. Rather than the
circular relations constituting the self-referentiality of the
human mind, Wittgenstein's circle was constituted through the
intersubjective circular relations of humans within a cultural
system. Meanings, said Wittgenstein, are formulated and stated
in "language games" consisting of a set of rules that
constitute closed circles of meanings. Because there is no individual
language there can be no individual meanings, and because such
systems are closed circles there can be no ostensive pointing
or reference to anything outside the system (i.e., an objective
"world"). What is more, because meaning is entirely
relative to the rules of each system and thus meaning invariance
is denied, such circles of meaning are incommensurable with respect
to each other. Truth thus varies from one closed circle to the
next, and can only be measured with respect to the rules or authority
of a particular community.
In Kuhn's influential history and philosophy of science Wittgenstein's
closed-circle language games were turned into paradigms, and the
history of science the shift from one paradigm to another (scientific
revolutions). Since reality is taken to be an ideal construction
of human cognizers operating under particular paradigms, and since
paradigms as closed circles are incommensurable with each other
there is no progress in science on Kuhn's view-without meaning
invariance there is no way to make a comparison. On this view,
Einstein's physics does not subsume or explain Newton's but rejects
it. The post-modern structuralism of Foucault, Derrida, and the
post-modern pragmatism of Rorty, which uses Foucault, in effect,
to justify Wittgenstein (Munz, 1987), are all closed circle theories
that share the common premises of the relativity of meaning to
circularly closed systems, and the incommensurability of such
systems with respect to each other and an external world. Closed-circle
theory carries forward the anti-realist position of positivism,
but attacks its rationality.
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