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In philosophy, epistemic theories of truth are attempts to analyse the notion of truth in terms of epistemic notions such as knowledge, belief, acceptance, verification, justification, and perspective.
Verificationism is based on verifying propositions. The distinctive claim of verificationism is that the result of such verifications is, by definition, truth. That is, truth is reducible to this process of verification.
According to perspectivalism and relativism, a proposition is only true relative to a particular perspective. Roughly, a proposition is true relative to a perspective if and only if it is accepted, endorsed, or legitimated by that perspective.
Many authors writing on the topic of the notion of truth advocate or endorse combinations of the following positions. Each of these epistemic conceptions of truth can be subjected to various criticisms. Some criticisms apply across the board, while others are more specific.
A-priorism, often used in the domains of logic and mathematics, holds a proposition true if and only if a priori reasoning can verify it. In the related certainty theory, associated with Descartes and Spinoza, a proposition is true if and only if it is known with certainty.
Logical positivism attempts to combine positivism with a version of a-priorism.
Perspectivist views Edit
According to perspectivalism and relativism, a proposition is only true relative to a particular perspective. The Sophists' relativist and Nietzsche's philosophy are some of the most famous examples of such perspectivalism. There are four main versions of perspectivalism, and some interesting subdivisions:
Individual perspectivalism Edit
According to individual perspectivalism, perspectives are the points of view of particular individual persons. So, a proposition is true for a person if and only if it is accepted or believed by that person (i.e., "true for me").
Discourse perspectivalism (Conventionalism) Edit
According to discourse perspectivalism, a perspective is simply any system of discourse, and it is a matter of convention which one chooses. A proposition is true relative to that particular discourse if and only if it is somehow produced (or "legitimated") by the methods of that particular discourse. An example of this appears in the philosophy of mathematics: formalism. A proposition is true relative to a set of assumptions just in case it is a deductive consequence of those assumptions.
Collectivist perspectivalism Edit
A perspective is, roughly, the broad opinions, and perhaps norms and practices, of a community of people, perhaps all having some special feature in common. So, a proposition is true (for a community C) if, and only if, there is a consensus amongst the members of C for believing it.
Fascist (power) Edit
In the fascist view, a perspective is a community enforced by power, authority, military might, privilege, etc. So, a proposition is true if it "makes us powerful" or is "produced by power", thus the slogan "truth is power".
This view of truth as a political stake may be loosely associated with Heidegger or with Michel Foucault's specific analysis of historical and political discourse, as well as with some social constructivists. However, the Nazi mysticism of a communitarian "Blood community" conception radically differs from Heidegger or Foucault's criticism of the notion of the individual or collective subject.
Truth-generating perspectives are collectives opposed to, or engaged in struggle against, power and authority. For example, the collective perspective of the "proletariat". So, proposition is true if it is the "product of political struggle" for the "emancipation of the workers" (Adorno). This view is again associated with some social constructivists (e.g., feminist epistemologists).
Transcendental perspectivalism Edit
On this conception, a truth-conferring perspective is something transcendental, and outside immediate human reach. The idea is that there is a transcendental or ideal epistemic perspective and truth is, roughly, what is accepted or recognized-as-true from that ideal perspective. There are three subvarieties of transcendental perspectivalism:
The ideal epistemic perspective is the set of "maximally coherent and consistent propositions". A proposition is true if and only if it is a member of this maximally coherent and consistent set of propositions (associated with several German and British 19th century idealists).
Theological perspectivalism Edit
Theologically, the ideal epistemic perspective is that of God ("God's point of view"). From this perspective, a proposition is true if and only if it agrees with the thoughts of God.
- Main article: Pragmatic theory of truth
Although the pragmatic theory of truth is not strictly classifiable as an epistemic theory of truth, it does bear a relationship to theories of truth that are based on concepts of inquiry and knowledge.
The ideal epistemic perspective is that of "completed science", which will appear in the (temporal) "limit of scientific inquiry". A proposition is true if and only if, in the long run it will come to be accepted by a group of inquirers using scientific rational inquiry. This can also be modalized: a proposition is true if, and only if, in the long run it would come to be accepted by a group of inquirers, if they were to use scientific rational inquiry. This view is thus a modification of the consensus view. The consensus need to satisfy certain constraints in order for the accepted propositions to be true. For example, the methods used must be those of scientific inquiry (criticism, observation, reproducibility, etc.).
Theories of truthEdit
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