When evaluating a design, what is essential?

When evaluating a design, applying it to scenarios similar to intended use is essential because it allows for a realistic assessment of how well the design performs in situations that mirror its actual application. This approach helps identify potential issues, ensure functionality, and assess usability within the context for which the design was originally intended.

Real-world testing against realistic scenarios enables designers to see how the design interacts with users and other systems, providing invaluable feedback that can lead to improvements or confirmations of effectiveness. It ensures that the design not only meets specifications but also aligns with user needs and expectations in a way that theoretical assessments or expert opinions alone cannot.

Gathering opinions from non-users may provide a fresh perspective but lacks the critical insights users have from direct experience. Relying solely on expert opinions can miss practical realities encountered by users. Avoiding changes during evaluation can prevent necessary adaptations that emerge from real-world testing and feedback, which are crucial for refinement and success of the design.