Truth — Multiple philosophical concepts of truth: (1) Correspondence (Aristotle, Tarski): a proposition is true if it corresponds to the facts; (2) Coherence: truth is the consistency of propositions within a system (British idealism); (3) Pragmatic (Peirce, James): true is what works, what is useful for action; (4) Deflationary: “p is true” is equivalent to asserting p, adding no substantive property; (5) Heidegger: originary truth is aletheia — the unconcealment of being.
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