Sometimes her cockiness and overconfidence can get her into trouble. It is usually caused by some tactical oversight, whether from time trouble, overconfidence or carelessness. Author Rebecca Solnit ascribed the phenomenon to a combination of "overconfidence and cluelessness". Hindsight bias may lead to overconfidence and malpractice in regards to doctors. Hindsight bias can also lead to overconfidence in decisions without considering other options. Avoiding fear is more important in aiming at courage than avoiding overconfidence. This theory of war also emphasized consolidation, recommending caution against overconfidence and ruthless exploitation. Lai attributed this business failure to overconfidence and the lack of a viable business strategy. However, his overconfidence led to his defeat. Kempis writes that false sense of freedom and overconfidence are obstacles for spiritual life. They are sometimes foiled primarily due to their own overconfidence. Overplacement is perhaps the most prominent manifestation of the overconfidence effect. This has been attributed to many factors, such as "maintenance costs" or simply overconfidence. He is a physically huge man, and is filled with blind faith and overconfidence. Gregory is punished for his overconfidence by being gruesomely slain.