Always show where the user is

Why this rule exists

People carry a mental map of any system they use, and disorientation is one of the quietest yet most corrosive failures in design. A user who does not know where they are, how they got there, or how to get back grows anxious and cautious, and a cautious user stops exploring and starts making mistakes. Orientation is cheap to provide and expensive to withhold. A clear title, a visible sense of which section is active, a breadcrumb, a step count in a flow, each one answers the constant background question of where am I so the user does not have to spend attention holding the map themselves. Good navigation is not just a way to move; it is a way to always know your position. The goal is a user who never feels lost, because feeling lost is where trust in a product goes to die.