Preface; D. Ginev. Introduction; D. Ginev. Part I: Investigations in the General Philosophy of Science. The Danger of Catching Nature in Contradiction; S. Petrov. Scientific Rationality, Decision and Choice; V. Bouzov. The Information Technology Revolution: A New, Techno-Economic Paradigm; S. Spassov. Are Bifurcations of Human Knowledge Possible? A. Petrov. Part II: Philosophy of Physics. The Proliferation and Synthesis of Physical Theories; A. Polikarov. On Human Agency in Physics; M. Bushev. Part III: Philosophy and Logic. Leibniz's Logical Systems: A Reconstruction; V. Sotirov. The Logic Between Two Centuries; M. Tabakov. Part IV: Philosophy of Science and Cognitive Science. Idealized Cognitive Models and Other Mental Representations; D. Genova. Philosophy of Science Meets Cognitive Science: The Categorization Debate; L. Gurova. Three Words: Hypertext and Argumentation Readings of Tractatus Logico-Philosophicus; S. Radev. Part V: Philosophy of Science and the Continental Ideas. On Kant's Conception of Space and Time; A.S. Stefanov. How to Be Simultaneously an Antiessentialist and a Defender of Science's Cognitive Specificity; D. Ginev. Notes on Contributors.