Background
The product design and development process used to rely primarily on engineers’ experience and judgment in producing an initial concept design. A physical prototype was then constructed and tested in order to evaluate its performance. Without any way to evaluate its performance in advance, the initial prototype was highly unlikely to meet expectations. Engineers usually had to re-design the initial concept multiple times to address weaknesses that were revealed in physical testing.
Read more about this topic: Virtual Prototyping
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—Emma Goldman (1869–1940)