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If in the course of interacting with an external world, a person is creating a set of coherent knowledge about this world, then there should be a mapping between their beliefs and the external facts. In this case, surely something can be held to be true both through correspondence and coherence definitions?

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    "A person is creating a set of coherent knowledge about this world, then there should be a mapping between their beliefs and the external facts" is either a tautology, if "knowledge" presumes some kind of correspondence by definition, or false, astrology is a set of coherent beliefs that are not so big on facts. "External facts" in themselves are problematic since any facts we can possibly have access to are by virtue of that not exactly "external". But you can make the definitions agree simply by declaring that "truths" are to cohere with "facts", the real question is what are "facts". – Conifold Jul 16 '15 at 19:28
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I think the end answer is no. Or rather, any theory that is also a correspondence theory is going to be at its core a correspondence theory. The reason for this is subtle but relates to a generally unsaid feature implicit in the standard understanding and application of the term coherence theory of truth.

A correspondence theory is defined as

the view that truth is correspondence to, or with, a fact (SEP).

A coherency theory of truth conversely is defined as:

A coherence theory of truth states that the truth of any (true) proposition consists in its coherence with some specified set of propositions. (SEP)

On these simple definitions it sounds like one could maintain a view of truth that is the conjunction of these views (coherence + correspondence).

What is missing from the simple definitions is that coherence theory (as a view positively held under that name ) is a rejection of the correspondence theory. In other words to advocate the coherence theory is to reject that truth is about correspondence to a world fact (however parsed).

In other words, we could say coherence = the coherence thesis and the negation of the correspondence thesis. This would give us "truth of any (true) proposition consists merely in its coherence with some specified set of propositions"


Now, there's some historical backfilling in claiming views like Hegel are coherence theories. If we're calling Hegel a "coherence" theorist, then things are a bit muddier as to whether his view simultaneously declares that a proposition is true both insofar as it is coherent with the categories of our thought and insofar as it corresponds to the world.

In a broader sense, you could say many (if not all correspondence theories other than naive realism) include a coherence component. This is partially captured in questions about how we should treat universals. Insofar as we can consistently say "the light is red and the pen is red" we have to have a "coherent" definition of red.


Coherence theory is relativistic, holding ideas are cultural and being truthful is just being good at moving these concepts around. Correspondence theory is inherently realist at its core. If you want a view that incorporates cultural differences but still accepts that there are matters of fact, then you're not advocating a coherence theory by force of the definition. Instead, you'er advocating some nuanced correspondence view.

You could also believe there's facts (i.e. correspondence-possibility) in certain domains but not in others. Interestingly, this is basically the view the advocates who used the term "correspondence theory" under that name wound up with.

  • I would even say not just negation of the correspondence thesis but rejection that correspondence thesis is even meaningful enough to be negated (otherwise one could at least have correspondence by accident or by pre-established harmony). Hegel's view is something like the ultimate conditions of the possibility of knowledge are the conditions constituting things in themselves, which is like a post-Kantian and evolutionary version of pre-established harmony. – Conifold Jul 17 '15 at 2:19
  • I either don't understand or don't agree with your second sentence. I take Hegel's view to be one that at the end of the day builds upon correspondence but does so by achieving full differentiation and coherence among the ideas of the group of subjects that do so (This is an idealization). Of course, there's a clear heritage that moves from the Hegelian view to the coherence theory, but I'd let the coherence theorists themselves decide whether correspondence is comprehensible but to be rejected or per se incoherent. – virmaior Jul 17 '15 at 3:49
  • I was inartfully channeling Pippin's "non-traditional" reading of Hegel through Kant:"thought determinations of the real... are what it is to be real", and "what initially can only be our way of taking up the world... can somehow pass to 'absolute status'", see Kreines' survey onlinelibrary.wiley.com/doi/10.1111/j.1747-9991.2006.00033.x/… Of course, Hegel would deny pre-established harmony and claim that his Logic establishes it. So by his own lights he is a corresponder, but on Pippin's reading he is no more so than Kant, unless we also accept that in the end Logic=metaphysics. – Conifold Jul 19 '15 at 3:36
  • @Conifold okay, that does clear it up! I don't think Pippin is wrong per se on seeing Hegel as channeling Kant in epistemology. – virmaior Jul 20 '15 at 10:00
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I will consider "true" a property of a propositions.

Then the correspondence definition of "true" reads:

A proposition is true if and only if it corresponds to a fact. This definition goes back to Aristotle.

A modern descendant is Tarski's definition: A proposition is true if and only if claims a fact.

Both types of definitions are faced with the problem to define what a fact is. And subsequently the question arises how to verify that the issue in question is a fact. The first definition in addition has to define the relation "to correspond".

On the other hand, the coherence definition operates only on the side of propositions. There is no need to take into account the domain of facts. Accordingly the coherence definition reads:

A proposition is true if and only if it coheres and is consistent with a system of propositions which has been accepted already.

Apparently the coherence definition is a relative definition, it defines "true relative to a set of proposition or better relative to an accepted theory."

One recognizes at once that the propositions, which a solipsist or a person in a state of psychosis accepts, satisfy the coherence definition of truth. But according to his fellow companions they do not satisfy the correspondence definition.

On the other hand, most people try to state propositions which satisfy both types of truth definition. Hence concerning many propositions many people consider compatible both types of definition.

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I don't think so; unless you presume a lot of things such as existence (what is it?!) of an external world (that contains a lot of facts) and such as One's knowledge (and what is that?!) is obtained only by interacting with an external (presumed) world and so on...

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