What is truth?

[Merchant31]

The word gets thrown around as if everyone already agrees what it means, but philosophy has never actually settled on a single account. The correspondence theory says a statement is true if it matches some fact out in the world, the cat is on the mat is true exactly when there really is a cat on that mat. It feels like common sense, but it quietly assumes we have some independent way of checking a statement against the world that does not itself rely on more statements, which turns out to be harder to pin down than it sounds.

The coherence theory takes a different route, saying a belief is true if it fits consistently within a wider web of other beliefs we already hold. This handles abstract claims, like statements in mathematics or ethics, that do not obviously correspond to any physical fact you could point at, but it opens the door to a perfectly self consistent system of beliefs that is nonetheless completely disconnected from reality, coherent and false at the same time.

Pragmatists offer a third option, truth is whatever belief actually works, whatever reliably lets you predict outcomes and act successfully in the world. That is appealing for science and everyday life, but it makes truth sound suspiciously close to usefulness, and plenty of useful beliefs throughout history, from certain simplifying models in physics to comforting illusions, were later shown to be flatly false despite working well enough for a long time.

Deflationary views try to sidestep the whole fight by saying truth adds nothing substantive to a claim at all, saying it is true that the cat is on the mat just means the cat is on the mat, full stop, and the concept of truth itself is more of a linguistic convenience than a deep metaphysical property. Whether that dissolves the problem or just refuses to answer it is itself a live argument.