Jakub Krawczyk

The identity-talk is a pervasive element in both philosophical inquiry and everyday life. The aim of this paper is to provide an initial analysis and ordering of characteristics that must cease to be the same for there to be a shift in people’s overall perceptions of the object’s identity. In contrast with the existing literature, our main interest lies in examining the interconnection between the change of an object’s name and the phenomenon of identity. The study consists of vignettes, which were designed to examine three variables: material constitution, name, and function. The undertaken research is conceived as a preliminary to the construction of the hierarchy of principles governing (re)identification. The most salient of our findings are the reveal of a significant influence of name changes on people’s identity statements, and the absence of an influence from functional changes.

This paper aims to re-examine the so-called Jaśkowski’s criterion. This guiding principle was initially proposed as a methodological instrument for delineating formal systems as either satisfactory or unsatisfactory paraconsistent logics. It is a historical fact that Jaśkowski’s criterion has been, and remains, frequently overlooked in the relevant literature. In order to provide a detailed explanation of this fact and the argument for it being a regrettable state, there are three main points elaborated upon. Firstly, the philosophical motivations of Jaśkowski’s work. Secondly, an overview of some early attempts of meeting requirements of Jaśkowski’s criterion. Thirdly, its relevance to contemporary research in the field of philosophical logic, particularly in relation to recent discussions on the notion of ‘philosophical interpretation’. From the above, philosophical conclusions are drawn, and avenues for further research are identified.