What is a potential problem with the positivist approach?

Epistemic theories of truth What is truth? How to know that a proposition is true? Verificationist approaches: A-priorism / Certainty theory – a proposition is true iff it is known with certainty or can be proven. Positivism – a proposition is true iff it is verifiable by sensory experiences. Perspectivist/relativist approaches: Individualist perspectivism (This is my truth!) Collectivist perspectivism – the proposition is true based on a consensus of a relevant group (e.g., scientific community, proletariat, authority, oppressed minorities). Transcendental perspectivism – the truth-conferring perspective is outside of immediate human reach (e.g., God or Nature). Pragmatic approaches: Completed science (limit of scientific inquiry) – the proposition is true iff it will be accepted in the long run by scientists using scientific ration inquiry. Epistemology is the branch of philosophy concerned with knowledge- e.g., the nature, origin, and scope of knowledge, epistemic justification, the rationality of belief, and various related issues.