Studia Humana Volume 7:4 (2018) Contents Truth and Adequacy. Remarks on Petrażycki’s Methodology (Jan Woleński)…………...………………………………………………..……………….…...3 The Knobe Effect From the Perspective of Normative Orders (Andrzej Waleszczyński, Michał Obidziński, Julia Rejewska)…………………………………9 The Emotivism of Law. Systematic Irrationality, Imagined Orders, and the Spirit of Decision Making (Adrian Mróz)………………………………………………………………………………...16 Leon Petrażycki on Norms and Their Logical Study (Elena Lisanyuk, Evelina Barbashina)…………………… …… …………………………...30 Creative Reasoning and Content-Genetic Logic (Andrew Schumann)…………………………………………. …...........................................39 Studia Humana Volume 7:4 (2018), pp. 3—8 DOI: 10.2478/sh-2018-0018 Truth and Adequacy. Remarks on Petra życki’s Methodology Jan Wole ński University of Information Technology and Management in Rzeszow, Poland e-mail :
[email protected] Abstract : The paper discusses the concept of adequacy central for Perta życki’s method- ology. According to Petra życki any valuable scientific theory should be ade- quate, that is, neither limping (to broad with respect its actual scope) nor jump- ing (too narrow with respect to its actual scope). Consequently, adequacy of a theory is a stronger condition than its truth. Every adequacy theory is true, but not conversely. However, there is problem, because scientific laws are condi- tionals (implications). This suggests that adequacy is too strong conditions, be- cause the consequence of an implication has a wider scope than its antecedent. Thus, laws should have the form of equivalence. The paper shows how model- theoretic characterization of theories allows to recognize truth and adequacy, consistently with Petra życki’s claims. Keywords : theory, truth, adequacy, model. Leon Petra życki (Eng. spelling: Petra życki) considered methodology of science as the fundament of successful scientific research.