What is a common scenario that fails the "four corners" rule?

The concept of the "four corners" rule pertains to evaluating a document based solely on its content, without considering external factors or context. The correct answer pertains to a scenario involving a document that is related to another responsive document through familial or similar relationships.

In this context, a document being a family member of another responsive document indicates that it may hold relevant information or context that can contribute to the understanding of the case at hand. This connection suggests that the contents of the document could be significant, even if it does not qualify as responsive on its own when assessed strictly within its four corners.

In contrast, other scenarios involve documents that are ejected from consideration due to specific limitations such as custodian behavior, date ranges, or repository characteristics. For instance, if a document is from a custodian whose documents are usually not responsive, or if it is outside a designated date range, it might be assumed to lack relevance. Similarly, documents from locations known for non-responsiveness may also be discounted. However, familial relationships often indicate the need to review documents beyond their individual content, recognizing that information can be interlinked and therefore potentially responsive.