`` they are n't like us , '' genna and harry clarify offensively at the same time and then genna adds , `` they go dark for endless reasons-pick anything that might make you want to betray your own kind and it could be a reason-and out of spite , or hatred or revenge , they go out of their way to tamper with the balance , interfering in our charge 's lives , disrupting events that were n't meant to be disrupted .