Читать книгу Risk Assessment - Marvin Rausand - Страница 113

In this book, we use the word risk to describe our uncertainty about adverse events that may occur in the future. Sometimes, decision‐makers may be wondering “whether the estimated risk in the coming period (e.g. five years) is higher or lower than the risk was in the past period.” With our definition of risk, speaking of risk in the past has no meaning. This is because when a period is over, there is no uncertainty related to what happened in that period. We therefore need another term that can be used to describe what happened in a past period – and we use the term safety performance.