00624134 EFTA00624135 Contents Section I Architectural and Representational Mechanisms 19 The OpenCog Framework 3 19.1 Introduction 3 19.1.1 Layers of Abstraction in Describing Artificial Minds 3 19.1.2 The OpenCog Framework 4 19.2 The OpenCog Architecture 5 19.2.1 OpenCog and Hardware Models 5 19.2.2 The