SYNOPSIS:
Roderick Chisholm argues that we can successful arrive at a general
criterion for distinguishing between cases in which we have knowledge and cases
in which we do not if we begin with specific instances in which we clearly have
knowledge, and then generalise from those cases to arrive at the principles of
“good” belief.
OUTLINE:
Step 1: Chisholm
begins by adumbrating Montaigne’s formulation of the problem of criterion
(590*).
Argument: We cannot know that our beliefs are true unless we have a
criterion for distinguishing between true or false beliefs. But we cannot know that a given criterion
succeeds at distinguishing between true or false beliefs unless we can check to
see if it yields the right results.
Moreover, we can check to see if a criterion yields the right results
only if we already know which of our beliefs are true and which are false.
Upshot: When we attempt to find a criterion of knowledge, we find
ourselves caught in a vicious circle.
Step 2: Chisholm
describes the dogmatist and the sceptic as occupying opposite extremes on the
continuum of how much we think we can know (590-591).
Argument: The dogmatist claims that we can know far more than we actually
can. The sceptic claims that we can know
far less than we probably can. Common
sense suggests that the truth lies somewhere between these two extremes.
Upshot: We know less than the dogmatist claims, but more than the sceptic
claims.
Step 3: Chisholm
considers Cardinal Mercier’s tripartite criterion of truth (591-592).
Argument: A criterion of truth should be
internal: the mind must be able to find sufficient reason within itself to hold
that a proposition is true. A criterion of truth should be objective: it is not
the subjective feeling of certainty, but the objective fact that causes the
feeling that constitutes the reason for holding something true. A criterion of truth should be immediate: If
we are to find a criterion that avoids an infinite regress, then we must find
grounds for assent that presuppose no other.
Upshot: A criterion of truth should be
internal, objective and immediate.
Step 4: Chisholm
considers Descartes formulation of the problem of criterion (592-593).
Argument: Beliefs are like a pile of good and bad apples in which the bad
apples tend to infect the good. We must
therefore get rid of the bad apples; which is to say, the false beliefs. If we
succeed, we would be left with a stock of true beliefs that we can rely on
completely. However, we can only tell
which beliefs are the good ones if we have a method for doing so. But given that there are good and bad
methods, we must first find a method for deciding between good and bad methods.
But in order to do that, we must first have a method for that method, and so
on, ad infinitum.
Upshot: The attempt to find a method to distinguish between good and bad
beliefs generates an infinite regress.
Step 5: Chisholm
reformulates the problem of criterion in terms of a pair of questions (593-594).
Argument: We may distinguish between the questions: (A) What do we know? What
is the extent of our knowledge? and (B) How do we decide whether we know? What
are the criteria of knowledge? If we
knew the answer to (A), we would be able to figure out the answer to (B). Alternatively, if we somehow already knew the
answer to (B), we would be able to figure out the answer to (A).
Upshot: There are two possible strategies for successfully answering (A)
and (B).
Step 6: Chisholm
distinguishes between methodist and particularist strategies for solving the
problem of criterion (594-596).
Argument: Methodists believe that we already know the answer to (B), and
that we can therefore use (B) to figure out the answer to (A). Particularists believe that we already know the answer to
(A), and that we can use (A) to figure out the answer to (B). The sceptic
claims that we cannot know the answer to (A) unless we first know the answer to
(B), and that we cannot know the answer to (B) until we first know the answer
to (A).
Upshot: There are three possible approaches one can take to answering (A)
and (B): the methodist, particularist, or sceptical.
Step 7: Chisholm
sides with the particularist (596-597).
Argument: We do not need to apply a
criterion to determine if we know things like this is a hand. There are certain
clear cases of knowledge. We are free to
begin with such cases, and (based on these clear cases) opine what the
criterion for knowledge should be. For
example, if we begin with clear cases of perceptual knowledge, we are led to
embrace the criterion of accepting the testimony of the senses unless we have
some reason to distrust them on a particular occasion.
Upshot: We can solve the problem of
criterion by beginning with particular cases of knowledge and generalising to
formulate a criterion for true belief.
Step 8: Chisholm
defines what he takes to be the key concepts in a theory of evidence (597-598).
Argument: A mental state, A, is intrinsically
preferable to another, B, only if anyone who prefers B to A is mistaken in
his preference. A proposition, p, is beyond reasonable doubt only if
believing p is epistemically preferable to withholding belief in P. A proposition, p, is evident for S only if it is beyond reasonable doubt for S. A
proposition, p, is acceptable if
withholding belief in p is not preferable to believing p, and unacceptable if withholding p is
preferable to believing p. A proposition, p, has some presumption in its favour only if believing p is preferable to
believing not-p. A proposition, p, is certain
if there is no other proposition that is epistemically preferable to believing
p.
Upshot: There are six key concepts
that are relevant to the attempt find a satisfactory criterion of knowledge.
Step 10:
Chisholm attempts to arrive at a criterion for certainty by considering the
“first truths of fact” (598).
Argument: The “first truths of fact” refers to propositions about one’s
mental states at a given time, such as one’s thinking certain thoughts,
entertaining certain beliefs, or being in certain sensory or emotional
states. Such states are
“self-presenting” in that it is necessarily true that if one is in that state
at some time, t, then it is evident to one at that one is in that state at
t. Perceiving that p and remembering
that p are not self-presenting states, but seeming to see that p and seeming to
remember that p are. Moreover, seeming to see that p and seeming to remember
that p is indirect evidence for p.
Upshot: If something is self-presenting, then it satisfies the criterion
for certainty.
Step 11:
Chisholm attempts to arrive at a criterion for certainty by considering the
“first truths of reason” (599).
Argument: An axiom is a necessary
proposition, such that one cannot understand it without thereby knowing that it
is true. A proposition is a priori for S
at time t, if one of the following is true at t: (i) the proposition is an
axiom for S at t, or (ii) it is evident to S that the proposition is entailed
by a set of propositions that are axioms for S at t. All a priori propositions are “first truths
of reason”.
Upshot: If something is an axiom for
one, then it satisfies the criterion for certainty.
Step 12:
Chisholm weighs the merits of the claim that sources of indirect evidence
should be treated as innocent (i.e., reliable) until there is positive grounds
for thinking them guilty (599-600).
Argument: We can begin attempting to articulate principles for a theory of
the indirectly evident by considering the following two claims: (M): If it is
evident to S that she seems to remember that p, then it is beyond reasonable
doubt for S that p, and (P): If it is evident to S that she seems to perceive
that p, then it is evident to S that p.
However, (M) and (P) are too permissive, and a complete epistemology is
needed in order to ad the appropriate qualifications. Nevertheless, (M) and (p) are possible
starting points.
Upshot: We can, in principle,
arrive at criterion if we paradigm cases of knowledge.
Step 13:
Chisholm acknowledges that he has simply presupposed particularism when
formulating his criterion of knowledge (600).
Argument: Given that our options are particularism, methodism, and
scepticism, there is no non-question-begging way of choosing between the
three. However, this does not mean that
the sceptic is right because if we assume particularism, we are able
acknowledge an obvious fact that we are unable to acknowledge if we assume
scepticism; namely, that we do know many things.
Upshot: We are no less justified in
assuming particularism than any of the other two approaches to the problem of
criterion.
Step 14:
Chisholm maintains that his proposed criterion for knowledge satisfies Cardinal
Mercier’s three requirements (600).
Argument: Since Chisholm’s criterion, which relies on self-presenting or
axiomatic propositions as indirect evidence for claims about the world, does
not appeal to any external authority, it satisfies Mercier’s requirement of
being internal. Since Chisholm’s approach allows that a subject may be mistaken
about whether one mental state is preferable to another, it follows that it is
objective. Since Chisholm’s criterion,
if it is adequate, involves principles that are necessarily true, it satisfies
Mercier’s requirement of being immediate.
Upshot: Chisholm’s criterion of
knowledge satisfies Mercier’s requirements of being internal, objective and
immediate.
CONCLUSION:
We may successfully arrive at a criterion for knowledge by adopting
a particularist approach which assumes that there are clear cases of knowledge,
and generalises from such cases to arrive at broad principles. The particularist approach Chisholm offers begins
with propositions about which we are certain, and use such propositions as
indirect evidence for propositions, which are thereby placed beyond reasonable
doubt.
DISCUSSION QUESTIONS:
DISCUSSION QUESTIONS:
1. Do you agree with Cardinal Mercier's claim that a criterion of knowledge should be internal, objective, and immediate? Why or why not?
2. Do you think Chisholm's assumption that there are certain clear cases of knowledge is warranted? Why or why not?
3. What, according to Chisholm, is the difference between something being evident and something being beyond reasonable doubt? In your opinion, is being beyond reasonable doubt (as the expression is used by Chisholm) sufficient for a belief to be justified? Is it sufficient for a belief to constitute knowledge?
4. Do you agree with Chisholm's claim that we can be certain about "first truths of fact"? What about "first truths of reason"? Why or why not?
*Page numbers based on the, Epistemology: Contemporary Readings, anthology.