The document discusses the importance and functions of research. It states that research corrects and expands perceptions by gathering new information on topics that are not well understood. Research also develops and evaluates concepts, practices, theories, and methods for testing these ideas. Additionally, research provides factual information to inform planning, decision-making, and evaluations for solving real-world problems related to issues like population growth, drug addiction, and crime. The document emphasizes that research is important for advancing human knowledge and improving life, and will continue to be relevant as long as people seek to expand their understanding of the world.