In 3 sentences or less, here is a summary of the key points from the document: The document outlines an 8-part sociotechnical model for measuring challenges in health information technology (HIT) systems, including the infrastructure, clinical content, human-computer interface, people who interact with the system, workflow and communication processes, internal organization features, external rules and regulations, and processes for measuring and monitoring both intended and unintended consequences of HIT implementation and use.