Although strictly speaking philosophy is not specialized in studying problems of facts (typical philosophical problems are conceptual, normative, and/or textual problems rather than factual problems), it not only should take problems of facts into considerations when it is studying conceptual, normative, and textual problems, but also should take the concept of “fact” as one of its most important subject matters. “Fact” is not a purely technical term in the field of philosophy; it is also a concept frequently used in everyday life. One way of making philosophical sense of this concept is to understand the relation between the concept “fact” and other relevant concepts, such as “fiction,” “value,” “theory,” “statement,” “things,” “events,” “the given,” “existents,” “truth,” “evidence,” and so on.