<p>In their terrific book <i>Reasons for Logic, Logic for Reasons</i>, Ulf Hlobil and Robert Brandom defend a normative-pragmatic interpretation of implication and incompatibility cashed out in bilateral terms. Using epistemic modal cases, I argue that Hlobil and Brandom’s normative-pragmatic interpretation of implication fails to account for the force of consequence and to provide an extensionally adequate characterization of implication. I also show that the same cases cause trouble for Hlobil and Brandom’s condition relating negation to incompatibility. I argue, however, that these problems can be avoided by switching from a bilateral to a multilateral setting.</p>

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A plea for multilateralism

  • Luca Incurvati

摘要

In their terrific book Reasons for Logic, Logic for Reasons, Ulf Hlobil and Robert Brandom defend a normative-pragmatic interpretation of implication and incompatibility cashed out in bilateral terms. Using epistemic modal cases, I argue that Hlobil and Brandom’s normative-pragmatic interpretation of implication fails to account for the force of consequence and to provide an extensionally adequate characterization of implication. I also show that the same cases cause trouble for Hlobil and Brandom’s condition relating negation to incompatibility. I argue, however, that these problems can be avoided by switching from a bilateral to a multilateral setting.