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where even simple general claims based on our experience of things claim |
much more than any empirical evidence we could have to justify them. So, |
empiricism suffers from incompleteness in an analogous way to logicism in |
the philosophy of mathematics, but, importantly, Quine suggests that the |
epistemology of empirical knowledge is no worse off than mathematical |
knowledge (see Roth, 96). Studies in mathematics lowered its epistemic |
standards in fruitful ways, and given this analogy, empiricism can follow |
suit. This requires moving from the attempt to reconstruct science logically |
from experience, something which Quine accepts would be more epistemologically |
adequate, and instead seeking a validation for scientifi c knowledge |
from within the methods of science. |
Quine β s argument is then an invitation for us to reconsider what empiricist |
epistemology looks like once we adopt a holistic view of human knowledge |
and accept the way this undermines an empiricist reduction of |
knowledge to experience, while further viewing science as providing the |
best remaining resources for addressing justifi catory issues in epistemology |
(see Roth, 96 β 100). Within such constraints, he stresses the importance of |
Quineβs Epistemology Naturalized 185 |
using the methods of science to justify scientifi c truths and to develop |
explanatory accounts of the causal mechanisms responsible for the creation |
of scientifi c theories. |
The infl uence of this argument can be measured in terms of two contrasting |
responses, one positive, the other critical. With regard to the fi rst, |
Quine β s suggested reconstruction of epistemology has spawned numerous |
attempts to offer more empirically informed accounts of human knowledge. |
Such views appeal to a variety of different sciences such as evolutionary |
biology, psychology, and neuroscience, and in the fi eld of philosophy of |
science further use has been made of history and sociology. More generally, |
Quine β s philosophical naturalism, where philosophy is to be conceived as |
part of empirical science, has further infl uenced the development of work |
in the philosophy of mind, language, ethics, and elsewhere. The second |
more critical response has claimed that Quine β s suggested naturalization of |
epistemology results in a curt dismissal of the central aims of epistemology. |
Here, much of the attention has focused on Quine β s apparent rejection of |
the normative aims of justifi cation leading to what many have viewed as a |
radical changing of the subject. The result is the so - called β replacement |
interpretation, β where Quine is taken as advocating the replacement of |
normative epistemology, which seeks to assess critically and rationally the |
evidential basis of our beliefs, with a psychological description of the causal |
processes of belief acquisition (Gregory, 85 β 121). |
Recent scholarship has suggested that this critical reading is mistaken |
and has further emphasized that, in general, Quine β s proposal does not seek |
to eliminate such normative concerns but, rather, explains how epistemology |
can still remain normative in light of empiricism β s failures and the |
ongoing progress of science. |
[T]here remains a helpful thought, regarding epistemology generally, in |
that duality of structure which was especially conspicuous in the foundations |
of mathematics. I refer to the bifurcation into a theory of concepts, or |
meaning, and a theory of doctrine, or truth; for this applies to the epistemology |
of natural knowledge no less than to the foundations of mathematics. |
The parallel is as follows. Just as mathematics is to be reduced to logic, or |
logic and set theory, so natural knowledge is to be based somehow on sense |
experience. This means explaining the notion of body in sensory terms; here |
is the conceptual side. And it means justifying our knowledge of truths of |
nature in sensory terms; here is the doctrinal side of the bifurcation. [ . . . ] |
Philosophers have rightly despaired of translating everything into observational |
and logico - mathematical terms. They have despaired of this even when |
they have not recognized, as the reason for this irreducibility, that the statements |
largely do not have their private bundles of empirical consequences. |
And some philosophers have seen in this irreducibility the bankruptcy of |
epistemology [ . . . ] But I think at this point it maybe more useful to say rather |
186 Robert Sinclair |
that epistemology still goes on, through in a new setting and a clarifi ed status. |
Epistemology, or something like it, simply falls into place as a chapter of |
psychology and hence of natural science. It studies a natural phenomenon, |
viz., a physical human subject. This human subject is accorded a certain |
experimentally controlled input β certain patterns of irradiation in assorted |
frequencies, for instance β and in the fullness of time the subject delivers as |
output a description of the three dimensional external world and its history. |
The relation between the meager input and the torrential output is a relation |
that we are prompted to study for somewhat the same reasons that always |
prompted epistemology; namely, in order to see how evidence related to |
theory, and in what ways one β s theory of nature transcends any available |
evidence. (Quine 71, 82 β 3) |
P1. There are important parallels between studies in the foundations of |
natural science and studies in the foundations of mathematics that can |
help illuminate the epistemology of empirical knowledge. |
P2. The logicist project of constructing logical procedures for the codifi cation |
of mathematical truths contained two elements: a conceptual one |
that defi ned mathematical notions in terms of logic, and a doctrinal |
component that derived mathematical truths using logical techniques. |
C1. The empiricist attempt to provide an evaluation or derivation of |
scientifi c truths on the basis of sensory experience contains the same |
general features: a conceptual side concerned with the defi nition of |
concepts in sensory terms, and a doctrinal side focusing on the justifi |
cation of truths of nature in sensory terms (analogy, P1, P2). |
P3. If the empiricist program is to be successful, it then needs to address: |
(A) The conceptual requirement of showing how theoretical concepts |
(e.g., body) can be defi ned in terms of sensory experience. |
(B) The doctrinal requirement of showing how scientifi c laws or generalizations |
can be derived from sense experience. |
P4. (A) cannot be achieved because concepts and sentences have experiential |
consequences only as a collective body, and not in isolation from each |
other (holism). (B) cannot be achieved because even the simplest generalizations |
based on experience outrun the empirical evidence (Hume β s |
problem). |
C2. No independent philosophical foundation for science is then available |
within empiricism ( modus tollens , P3, P4). |
P5. There are no better standards of justifi cation available between formal |
derivation and the standards of empirical science itself (Quine β s scalar |
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