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The Normative Thought of Charles S. Peirce$
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Cornelis de Waal and Krysztof Piotr Skowronski

Print publication date: 2012

Print ISBN-13: 9780823242443

Published to Fordham Scholarship Online: January 2013

DOI: 10.5422/fordham/9780823242443.001.0001

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Why is the Normativity of Logic Based on Rules?

Why is the Normativity of Logic Based on Rules?

(p.172) Eight Why is the Normativity of Logic Based on Rules?
The Normative Thought of Charles S. Peirce

Ahti-Veikko Pietarinen

Fordham University Press

According to Peirce, normative sciences are the “most purely theoretical of purely theoretical sciences.” At the same time, he takes logic to be a normative science. These two sentences form a highly interesting pair of assertions. Why is logic among the most purely theoretical sciences? What does it actually mean that logic is a normative science? This chapter answers these questions by addressing the question of why the normativity of logic is, as a matter of fact, based on rules.

Keywords:   normative sciences, logic, theoretical science, normativity

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