Mithrandir
INTP
It is common for me to see people talking past each other in discussions because they use different definitions of "truth", and they might not realize that many of these conflicts could not be resolved unless they were to meet at the ontological level.
At some point every individual will make an assumption about "truth". Below I will list a few common theories of "truth" and their criticisms. These definitions and criticisms will be short and in no way complete.
Which theory/ies do you identify with and how do you overcome the common criticisms against? Also, how do you think your chosen theory influences how you approach the more practical aspects of your thought and life?
Common Theories of Truth
Correspondence
Theory of Truth: Truth is the correspondence of what you know or say (mental image, ideas, etc.) to what is (real world).
Criticism: If our relation to truth is just a mental projection or copy of the real thing in our minds, and not the direct form or essence as it exists in reality, then we can never know whether or not those projections correspond to real objects and their actual likeness. We would have to trust without confirmation that as we strive for accuracy in all our faculties of perception and judgment (sensing, thinking, feeling, intuition, etc.), that we are getting closer to what is considered truth.
Pragmatism
Theory of Truth: Truth is what works for an individual or group, which is subjective and relative.
Criticism: There are already words for "what works" such as "effective" or "practical", so using the same definition for "truth" is linguistic confusion. Also, what is true is not always practical, and what is practical is not always true (such as a useful lie).
Empiricism
Theory of Truth: Truth is only what can be proved with our senses.
Criticism: Sensing is inherently subjective, and what we "sense" is not always what is "true" (false positives). This issue is generally considered "solved" by the rigidity and consistency of the scientific method. However, the very concept of empiricism is an a priori rationalistic ideology and therefore cannot be considered "true" by its own standards. In other words, there is no scientific method for proving that only the scientific method proves truth. Thus, accepting as "truth" an ideology that accepts nothing except what the scientific method proves is self-contradictory.
Rationalism
Theory of Truth: Truth is only what can be proved with reason.
Criticism: You cannot prove that "truth" is only what can be proved with reason. In other words, the theory of rationalism cannot be considered "true" by its own standard. Furthermore, there are "truths" that cannot be proved, such as the law of noncontradiction, which is presupposed in all proofs. You cannot prove it without first assuming the very thing you are trying to prove.
Coherence
Theory of Truth: Truth is the consistency, oneness, or harmony among a set of ideas.
Criticism: This theory sets itself in contrast to Correspondence, but presupposes "truth" in the same way Correspondence does (that this theory of truth is itself "true" in terms of corresponding to the "real world"). The theory also allows for contradictory beliefs to be considered "true" when cohering to different sets, breaking the law of noncontradiction.
Universal Skepticism
Theory of Truth: No truth is knowable.
Criticism: The very declaration implies that "no truth is knowable" is true, which is self-contradictory. Even when altered to "truth can only be probable," the theory cannot be considered certain without then contradicting itself. And even then, if it is only probable that truth can only be probable, this proposition itself can only be probable, et cetera ad infinitum. The proposition never finishes. The skeptic cannot even declare "I don't know if truth is knowable" without contradiction, because it is itself a declaration of truth, implying that they know that they "don't know". Without truth, any and all knowledge is impossible.
Universal Subjectivism
Theory of Truth: All truth is subjective, and entirely dependent on the "knower".
Criticism: "All truth is subjective" is itself a declaration of objective truth about the "real world". However, if the subjectivist claimed only that the subjectivity of truth is a subjective truth, a personal opinion or feeling in their mind, then they would not be claiming that the theory was really (objectively) correct, and therefore could not disagree with any other theory. And if all conflicting theories are considered true, the word "truth" has no meaning because all definitions have been included.
See dialog of Socrates and Protagoras:
At some point every individual will make an assumption about "truth". Below I will list a few common theories of "truth" and their criticisms. These definitions and criticisms will be short and in no way complete.
Which theory/ies do you identify with and how do you overcome the common criticisms against? Also, how do you think your chosen theory influences how you approach the more practical aspects of your thought and life?
Common Theories of Truth
Correspondence
Theory of Truth: Truth is the correspondence of what you know or say (mental image, ideas, etc.) to what is (real world).
Criticism: If our relation to truth is just a mental projection or copy of the real thing in our minds, and not the direct form or essence as it exists in reality, then we can never know whether or not those projections correspond to real objects and their actual likeness. We would have to trust without confirmation that as we strive for accuracy in all our faculties of perception and judgment (sensing, thinking, feeling, intuition, etc.), that we are getting closer to what is considered truth.
Pragmatism
Theory of Truth: Truth is what works for an individual or group, which is subjective and relative.
Criticism: There are already words for "what works" such as "effective" or "practical", so using the same definition for "truth" is linguistic confusion. Also, what is true is not always practical, and what is practical is not always true (such as a useful lie).
Empiricism
Theory of Truth: Truth is only what can be proved with our senses.
Criticism: Sensing is inherently subjective, and what we "sense" is not always what is "true" (false positives). This issue is generally considered "solved" by the rigidity and consistency of the scientific method. However, the very concept of empiricism is an a priori rationalistic ideology and therefore cannot be considered "true" by its own standards. In other words, there is no scientific method for proving that only the scientific method proves truth. Thus, accepting as "truth" an ideology that accepts nothing except what the scientific method proves is self-contradictory.
Rationalism
Theory of Truth: Truth is only what can be proved with reason.
Criticism: You cannot prove that "truth" is only what can be proved with reason. In other words, the theory of rationalism cannot be considered "true" by its own standard. Furthermore, there are "truths" that cannot be proved, such as the law of noncontradiction, which is presupposed in all proofs. You cannot prove it without first assuming the very thing you are trying to prove.
Coherence
Theory of Truth: Truth is the consistency, oneness, or harmony among a set of ideas.
Criticism: This theory sets itself in contrast to Correspondence, but presupposes "truth" in the same way Correspondence does (that this theory of truth is itself "true" in terms of corresponding to the "real world"). The theory also allows for contradictory beliefs to be considered "true" when cohering to different sets, breaking the law of noncontradiction.
Universal Skepticism
Theory of Truth: No truth is knowable.
Criticism: The very declaration implies that "no truth is knowable" is true, which is self-contradictory. Even when altered to "truth can only be probable," the theory cannot be considered certain without then contradicting itself. And even then, if it is only probable that truth can only be probable, this proposition itself can only be probable, et cetera ad infinitum. The proposition never finishes. The skeptic cannot even declare "I don't know if truth is knowable" without contradiction, because it is itself a declaration of truth, implying that they know that they "don't know". Without truth, any and all knowledge is impossible.
Universal Subjectivism
Theory of Truth: All truth is subjective, and entirely dependent on the "knower".
Criticism: "All truth is subjective" is itself a declaration of objective truth about the "real world". However, if the subjectivist claimed only that the subjectivity of truth is a subjective truth, a personal opinion or feeling in their mind, then they would not be claiming that the theory was really (objectively) correct, and therefore could not disagree with any other theory. And if all conflicting theories are considered true, the word "truth" has no meaning because all definitions have been included.
See dialog of Socrates and Protagoras:
Protagoras: Truth is relative. It is only a matter of opinion.
Socrates: You mean that truth is mere subjective opinion?
Protagoras: Exactly. What is true for you is true for you, and what is true for me, is true for me. Truth is subjective.
Socrates: Do you really mean that? That my opinion is true by virtue of its being my opinion?
Protagoras: Indeed I do.
Socrates: My opinion is: Truth is absolute, not opinion, and that you, Mr. Protagoras, are absolutely in error. Since this is my opinion, then you must grant that it is true according to your philosophy.
Protagoras: You are quite correct, Socrates.