Insider/Outsider Debate

Before taking this class I had never heard about an author being an insider or an outsider pertaining to the topic they are writing about. As this class is a diverse literature course, I realized the importance of insider/outsider author debate. Although an author may not be “insider” inadvertently, they are labeled as an outsider. Is the line between an insider and outsider author that clear? Can an “insider” be more of an outsider in their own culture than perhaps an labeled outsider? Or can an “outsider” be more of an insider to a culture other than their own? Based on ones personal experiences with any culture (even their own) can cause stereotypes or biased opinions. One may be part of a culture based on their experiences in which they identify themselves with, ultimately causing them to reflect in a certain way. The question is if those experiences are reflected accurately in written form.