Introduction: Why Human-Computer Interaction Matters - Think about the last time you struggled with an app or a website that felt clunky, confusing, or just plain frustrating. Chances are, the problem wasn't with you—it was with the way the system was designed. This is exactly where Human-Computer Interaction (HCI) comes into play. HCI is the study of how people interact with technology and how we can design systems that are not only functional but also intuitive, efficient, and enjoyable to use.

