A project’s long-term success depends on its capabilities to adopt environmental changes. New ideas are necessary for that, but they mean a little by themselves, if there’s no platform for their quick validation.
The approval of a new idea with clear understanding goals, revealing missed requirements and making necessary tests becomes possible with the prototyping approach, which essentially is making a simplified model that lets specify if it’s worth further implementation.
The primary goal of this approach is to reduce development time and cost by quick decision making in early stages of working with the idea.