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Diabetics are prone to this complication , and the etiology of their erectile dysfunction is multifactorial , thus making their treatment a special challenge for physicians and other health care professionals , " Vardi said . The symptoms of working the night-shift have been well-documented : feelings of drowsiness , being more prone to accidents and mistakes , feeling disconnected from management , and experiencing negative perceptions about fitting in with the rest of the company . Dictatorships are notoriously prone to both paranoic fears and illusions of grandeur , i.e. they tend to exaggerate both threats to their rule ( i.e. ' windows of vulnerability ' ) and their own ability to redress the situation , hence to jump through presumed ' windows of opportunity ' .