Evidentialism is a theory of justification according to which whether a belief is justified depends solely on what a person's evidence is. Theory of justification is a part of Epistemology that attempts to understand the justification of Propositions and Beliefs Epistemologists are concerned Belief is the psychological state in which an individual holds a Proposition or Premise to be true Technically, though belief is typically the primary object of concern, evidentialism can be applied to doxastic attitudes generally. Doxastic - Pertaining to Belief. Alternatively also pertaining to states sufficiently like beliefs ( Thoughts Judgments Opinions desires Wishes Formulating evidentialism in terms of the doxastic attitude of belief its most-defended form comes from Conee and Feldman: Belief B toward proposition p is epistemically justified for S at t if and only if B fits the evidence S has at t. In Logic and Philosophy, proposition refers to either (a the content or Meaning of a meaningful Declarative sentence ↔
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Critics of evidentialism sometimes reject the claim that a belief is justified only if one's evidence supports that belief. A typical counterexample goes like this. Suppose, for example, that Babe Ruth approaches the batter's box believing that he will hit a home run despite his current drunkenness and overall decline in performance in recent games. George Herman Ruth Jr (February 6 1895 &ndash August 16 1948 also popularly known as " Babe " " The Bambino " and " The Sultan of In Baseball, Softball, and similar sports and games the batter's box is the place where the batter stands when ready to receive a pitch Drunkenness or inebriation is the state of being intoxicated by consumption of Alcoholic beverages to a degree that mental and physical faculties are noticeably Baseball is a Bat-and-ball Sport played between two teams of nine players each He realizes that, however unlikely it is that his luck will change, it would increase his chances of hitting a home run if he maintains a confident attitude. In these circumstances, critics of evidentialism argue that his belief that p = Babe Ruth will hit a home run is justified, even though his evidence does not support this belief.
Evidentialists may respond to this criticism by forming a distinction between pragmatic or prudential justification and epistemic justification. Epistemology (from Greek επιστήμη - episteme, "knowledge" + λόγος, " Logos " or theory of knowledge In Babe Ruth's case, it is pragmatically justified that he believe p, but it is nevertheless epistemically unjustified: Though the belief may be justified for the purpose of promoting some other goal (a successful at bat, in Ruth's case), it is not justified relative to the purely epistemic goal of having beliefs that are most likely to be true.
A similar response follows the criticism that evidentialism implies all faith based beliefs are unjustified. Faith is a Belief in the trustworthiness of an Idea. Formal usage of the word "faith" is usually reserved for concepts of Religion, as in For example, fideism claims that evidence is irrelevant to religious beliefs and that attempts to justify religious beliefs in such a way are misguided. Fideism is the view that Religious belief relies primarily on Faith or Special revelation, rather than rational inference or observation Superficially, fideism and evidentialism have mutually exclusive takes on religious beliefs, but evidentialists use the term "justification" in a much weaker sense than the one in which fideists most likely use it. Evidentialism merely defines the epistemic condition of a belief, an issue towards which fideists would most likely be apathetic.
Likewise, some say that the human mind is not naturally inclined to form beliefs based on evidence, viz. cognitive dissonance. In Psychology, cognitive dissonance is an uncomfortable feeling or stress caused by holding two contradictory ideas simultaneously While this may be the case, evidentialists admit, evidentialism is only meant to separate justified beliefs from unjustified beliefs. One can believe that evidentialism is true yet still maintain that the human mind is not naturally inclined to form beliefs based on evidence. He would simply have to conclude that the mind is not naturally inclined to form justified beliefs.
Evidentialism has also been challenged on the basis of another kind of example (see Keith DeRose, "Ought We to Follow Our Evidence," Philosophy and Phenomenological Research 60 (2000): 697-706; at pp. 703-706): skeptical hypotheses. It can seem that certain skeptical hypotheses -- like that one is bodiless brain-in-vat hooked up to a supercomputer that sees to it that one receives the appropriate sensory input -- can fit one's relevant evidence as well as does the "real world hypothesis. " But are we to believe these skeptical hypotheses are false, and that some real world hypothesis is true, only to the (seemingly slight or non-existent) extent that our relevant evidence favors our belief in a real world over skeptical hypotheses? DeRose suggests that, so far from being epistimically justified, the poor soul who followed her evidence in this case, and consequently failed to believe firmly in a real world, would be a prime case of an irrational believer. But others may be willing, or even happy, to follow evidentialism to a radical skeptical conclusion.
Evidentialism also faces a challenge from the infinite regress argument. This argument begins with the observation that, normally, one's supporting evidence for a belief consists of other beliefs. But it seems that these other beliefs can do the job of justifying only if they themselves are already justified. And evidentialism demands that these supporting beliefs be justified by still further evidence if they are to be justified themselves. But this same reasoning would apply to the new, deeper level of supporting beliefs: they can only justify if they're themselves justified, and evidentialism therefore demands an even deeper level of supporting belief. And so on. According to this argument, a justified belief requires an endless supply of reasons. Most philosophers agree that this is an absurd conclusion. Philosophy is the study of general problems concerning matters such as existence knowledge truth beauty justice validity mind and language
In general, responses to this argument can be classified in the following ways:
Foundationalism: There exist beliefs that are justified, but not because they are based on any other beliefs. Foundationalism is any theory in Epistemology (typically theories of justification, but also of Knowledge) that holds that beliefs are justified (known These are called properly basic beliefs, and they are the foundation upon which all other justified beliefs ultimately rest. In Foundationalism, basic beliefs (also commonly called foundational beliefs) are the Axioms of a Belief system
Coherentism: Justified beliefs are all evidentially supported by other beliefs, but an infinite set of beliefs is not generated, because the chains of evidential support among beliefs is allowed to move in a circle. There are two distinct types of coherentism. One refers to the Coherence theory of truth. On the resulting picture, a person's belief is justified when it fits together with the person's other beliefs in a coherent way in which the person's various beliefs mutually support one another.
Conditional Theory of Justification: A belief is justified by a set of beliefs. However this justification operates conditionally, as it depends on the truth of the justifying beliefs. There is not a need for basic beliefs, but one should note that this type of justification is weaker.
Skepticism: There cannot be any justified beliefs. In ordinary usage skepticism or scepticism ( Greek 'σκέπτομαι' skeptomai, to look about to consider see also spelling differences
Aside from these responses, some philosophers have said that evidential chains terminate in beliefs that are not justified. Others have said that, indeed, there can exist infinite chains of reasons.
Of the main responses, coherentism and skepticism are clearly consistent with evidentialism. Coherentism allows evidential support for all of our justified beliefs in the face of the regress argument by allowing for circular chains of evidential support among beliefs. And the skeptic here is utilizing an evidentialist demand to arrive at her skeptical conclusion.
But because the resulting skepticism is so sweeping and devastating, and because so many reject the legitimacy of the circular reasoning embraced by the coherentist, foundationalism is the favored response of many philosophers to the regress argument. And foundationalism does not so clearly fit together with evidentialism. At first glance, at least, the "basic" beliefs of the foundationalist would appear to be counterexamples to the evidentialist's thesis, in that they are justified beliefs that are not rational because they are supported by deeper evidence.
Many contemporary epistemologists reject the view that evidential support is the whole story about the justification of beliefs. While no sensible epistemologists generally urge people to disregard their evidence when forming beliefs, many believe that a more complete theory would introduce considerations about the processes that intitiate and sustain beliefs. An example of one such theory is reliabilism. Reliabilism a category of theories in the philosophical discipline of Epistemology, has been advanced both as a theory of Knowledge and of justified The most influential proponent of reliabilism is Alvin Goldman. Alvin Ira Goldman (born 1938 is an American professor of Philosophy at Rutgers University in New Jersey. According to a crude form of reliabilism, S is justified in believing p if and only if S 's belief in p is caused by a reliable process -- a process that generally leads to true beliefs. Some of these reliable processes may require the processing of evidence; many others won't. So evidentialism, on which the justification of a belief always turns completely on the issue of the belief's evidential support, is false. Likewise, evidentialism will be rejected by more sophisticated versions of reliabilism, some of which will allow evidence an important but limited role, as opposed to the all-encompassing role assigned to it by evidentialism.
Other non-evidentialist theories include: the Causal Theory, according to which S knows p if and only if S 's belief in p is causally connected in an appropriate way with S 's believing p; and Robert Nozick's Truth Tracking Theory, according to which S knows p if and only if (i) p is true, (ii) S believes p, (iii) S 's attitude toward p tracks the truth value of p in that, when p is not true, S does not believe p and when p is true, S does believe p. Robert Nozick ( November 16, 1938  &ndash January 23, 2002) was an American Philosopher and Pellegrino University
Another alternative perspective, promoted by David Hume's 18th Century opponent, Presbyterian philosopher Thomas Reid, and perhaps hinted at by Hume himself, at least in some moods (though this is a very controversial issue in interpreting Hume), has it that some of our "natural" beliefs -- beliefs we are led to form by natural features of the human constitution -- have what can be called an "innocent-until-proven-guilty" status. David Hume (26 April 1711 25 August 1776 Scottish Philosopher, Economist, and Historian is an important figure in Western philosophy Presbyterianism is a family of Christian denominations within the Reformed branch of Protestant Western Christianity Thomas Reid ( April 26, 1710 – October 7, 1796) Scottish Philosopher, and a contemporary of David Hume, was Contrary to evidentialism, they can be justified in the absence of any effective evidence that supports them. They are justified just so long as one doesn't have good reason to think them false.
A very important and provocative new account of the extent of our evidence is Timothy Williamson's claim that E=K: One's evidence is what one knows. Timothy Williamson (born Uppsala, Sweden, 6 August 1955) is a distinguished British Philosopher whose main research interests are (See Williamson's book, Knowledge and Its Limits (Oxford UP, 2000). ) Going by the "letter of the law," Williamson's resulting theory is not contrary to, but is rather an instance of, evidentialism. By allowing our evidence to encompass everything we know, Williamson is able to give thoroughly evidentialist accounts of many important epistemological concepts. But, traditionally, evidentialists have presupposed much more restrictive accounts of what our evidence is. Thus, Williamson's theory is opposed to the spirit of much traditional evidentialism. However, Williamson's work may point to a quite general way to modify traditional evidentialism to make it better able to meet the challenges it faces: Whether or not one goes so far as to accept that E=K, broadening one's view of what comprises our evidence may provide a way to address many of the objections to evidentialism, especially to those disinclined to swallow skeptical consequences of a view.