The Gift of Fear Top 100 Self Help authors. The Gift of Fear was selected for the book, 50 Psychology Classics. By finding patterns in stories of violence and abuse, de Becker seeks to highlight the inherent predictability of violence. The book explores various settings where violence may be found—the workplace, the home, the school, dating—and describes what de Becker calls pre-incident indicators (PINS). By noticing PINS (events and behaviors that often precede violence), individuals can better predict violence before it occurs, and therefore, take the necessary precautions and actions to stay safe. "The Gift of Fear" also describes de Becker’s MOSAIC Threat Assessment
Irrational number numbers are irrational. The first proof of the existence of irrational numbers is usually attributed to a Pythagorean (possibly Hippasus of Metapontum), who probably discovered them while identifying sides of the pentagram. The then-current Pythagorean method would have claimed that there must be some sufficiently small, indivisible unit that could fit evenly into one of these lengths as well as the other. However, Hippasus, in the 5th century BC, was able to deduce that there was in fact no common unit of measure, and that the assertion of such an existence was in fact a contradiction. He did this by