The document discusses ergonomics and its importance in improving human performance. It defines ergonomics as "the scientific discipline concerned with the understanding of interactions among humans and other elements of a system." The document outlines the objectives and benefits of ergonomics, such as increased comfort, efficiency, and well-being. It also discusses the potential costs of ignoring ergonomics, such as higher medical costs and injuries. Finally, the document emphasizes that ergonomics is a dynamic science that aims to optimize both human and system performance.