This document provides a study guide for the TOK midterm, summarizing key concepts from chapters 1-6. It discusses topics like common sense, mental maps, evidence, and open-mindedness in relation to the problem of knowledge. It also covers justified true belief, primary vs secondary knowledge, language concepts like ambiguity and metaphor, perception topics such as context and expectations, logical reasoning fallacies, and how emotion can influence knowledge through emotional coloring and emotive language. The study guide concisely defines each concept in 1-2 sentences to help students prepare for the exam.