Final answer:
It is difficult to create virtual-comprehensive prototypes due to the limitations of CADD software and hardware, difficulty in accurate analysis and parameterization, and the complexities in simulating real-world interactions fully.
Step-by-step explanation:
Creating virtual-comprehensive prototypes is a challenging task due to several limitations that come with virtual prototyping. While computer-aided design and drafting (CADD) programs can simulate many aspects of a physical system such as mechanical, electrical, and other characteristics, they still present difficulties in analysis, parameterization, and communication. This is compounded by the inherent limitations of software and hardware, which may not fully capture the nuances of the final product's real-world interactions.
Moreover, prototypes, regardless of being physical or virtual, are essential in the design process to test and refine the design. Comprehensive prototypes that implement the whole design are particularly complex to create as they attempt to emulate all aspects and interactions of the proposed final product or system. Additional challenges arise due to the mathematical and science-based idealizations needed to evaluate the prototype's performance against real-world expectations.
An important function of prototypes is to identify and correct design flaws early in the development process, preventing poor design decisions that cannot meet customers' needs. Comprehensive virtual prototypes need to be rigorously tested and evaluated to ensure that the design will work as expected, and poor testing can lead to inadequate quality assessment. However, the complexities involved in creating comprehensive virtual models can lead to significant challenges in achieving this level of reliability in the design verification process.