If the literature is searched for case reports, a particular kind of sampling bias is inevitable: unusual cases will be overrepresented simply because they are considered noteworthy.

• 如果文化作品要寻求角色报告的话,一个样品上的偏见不可避免:不寻常的角色将有过度的代表性,仅仅是因为他们被认为是值得注意的。