Authority control is a method used in libraries and information management to ensure consistency in the naming of subjects, authors, and other entities. It helps organize information by creating a standardized set of terms and identifiers, making it easier to find and retrieve resources. This system is crucial for maintaining accurate bibliographic records and improving search efficiency. By implementing authority control, libraries can avoid confusion caused by variations in names or titles. For example, the same author might be listed under different names, such as Mark Twain and Samuel Clemens. Authority control resolves these discrepancies, allowing users to access all works by an author under a single, recognized name.