What type of representation is often smaller than the original and used to test ideas or designs?

The correct answer is a model because a model serves as a smaller or scaled-down representation of an object or design, allowing for visualization and analysis of ideas or solutions. Models are typically used in the early phases of design to experiment and explore concepts without the expense and time commitment of creating larger or full-scale variations.

Models can vary in their fidelity; for instance, some may represent only the geometry of a design, while others may simulate certain conditions and functionalities. This aspect makes them valuable for understanding and refining a concept before moving to later stages, such as creating a prototype or conducting more intensive testing.

Models can demonstrate specific factors relating to dimensions, appearances, and overall feasibility, aiding in decision-making processes during interactions with clients or stakeholders. This allows for effective communication of design intent by providing a tangible representation that can be evaluated and modified as needed.

While mock-ups, blueprints, and prototypes also serve important roles in the design process, they each have distinct characteristics that set them apart from the broader category of models.