Keywords: risk theory, risk concepts, risk attributes, risk definition, risk measurement, risk assessment, nuclear power, nuclear energy
On understanding the risk concept
Risk is everywhere, and people have to cope with risks. In order to establish a scientific theory of risk, three core problems should be solved. They are how to define risk, how to express risk in a proper mathematical form and how to measure risk. On the basis of a common understanding between domestic and foreign scholars on risk definition, a complete risk definition is presented based on uncertain information. Five basic attributes of risk are given: harmfulness, possibilities, dynamism, subjection and complementarity. Then, a detailed description of each attribute is given, especially on harmfulness, considered to be the essential attribute.