Scholars have wondered for a long time whether the language of quantummechanics introduces a quantum notion of truth which is formalized by quantumlogic (QL) and is incompatible with the classical (Tarskian) notion. We showthat QL can be interpreted as a pragmatic language of assertive formulas whichformalize statements about physical systems that are empirically justified orunjustified in the framework of quantum mechanics. According to thisinterpretation, QL formalizes properties of the metalinguistic notion ofempirical justification within quantum mechanics rather than properties of aquantum notion of truth. This conclusion agrees with a general integrationistperspective that interprets nonstandard logics as theories of metalinguisticnotions different from truth, thus avoiding incompatibility with classicalnotions and preserving the globality of logic. By the way, some elucidations ofthe standard notion of quantum truth are also obtained. Key words: pragmatics, quantum logic, quantum mechanics, justifiability,global pluralism.
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