What is an advantage of using prototypes in iterative design?

Using prototypes in iterative design offers significant advantages, particularly in the realm of obtaining tangible feedback for improvement. When a prototype is developed, it serves as a concrete representation of the design concept, allowing stakeholders, users, and developers to interact with a physical manifestation of the idea. This interaction generates valuable insights and reactions which can be directly applied to refine and enhance the design.

This feedback loop is crucial in the iterative design process, where the goal is to continuously improve the product based on real user experiences and testing. By gathering input on what does and does not work in a prototype, designers can make informed decisions about adjustments that will lead to a better final product. It fosters collaboration between designers and users, ensuring the final output aligns more closely with user needs and preferences.

In contrast, the other options don't accurately capture the primary benefit of using prototypes. While prototypes can be refined over time, they are not intended to eliminate the need for further testing or to serve as final products. In fact, prototypes are typically used specifically for the purpose of ongoing testing and iterations. Furthermore, prototypes are usually less expensive than final products since they are often made with simpler materials and constructed for exploration rather than for the market.