The document discusses diffusion and how it relates to the spread of innovations. It defines diffusion as the process by which change occurs and innovations spread from one group to another. Diffusion applies broadly to different areas and contexts, involving the dispersal of something more widely. The document also discusses Rogers' diffusion of innovation curve, which shows how different types of adopters embrace innovations over time. Finally, it lists many factors that influence the success or failure of innovations in the 21st century, such as demographics, communication, culture, and environmental climate.