The primary goal of creating a prototype in product design is to validate ideas and concepts before full-scale production. Prototyping allows designers to test functionality, user interface, and overall feasibility, gathering feedback to make necessary adjustments. It serves as a tangible representation of the concept, helping stakeholders visualize the final product. Early identification of design flaws or usability issues can save time and resources, ultimately enhancing the success of the product in meeting user needs and market demands.