The Criterion of the 'Logicality' of Logic According to Susan Haack

Abstract

In the philosophy of logic the following questions are discussed: What is logic? Which formal systems are systems of logic? What does make them systems of logic? The paper presents and analyses the answers to these questions given by Susan Haack. She adopted the strategy, called the “hospitable policy”, giving the criterion in which formalism is a logical one. In the article I discuss whether the validity of her solutions is correct.