The document discusses user-centered design of data tools and health IT systems. It emphasizes that systems should be designed based on how humans perceive, process, and use information (human factors research) rather than just focusing on what computers can do. Well-designed interfaces can improve outcomes, such as a behavioral intervention credited with saving 58,000 injuries and $655 million per year by reducing car crashes. The document advocates asking how systems can augment human cognition rather than automate it.