The virtual IC factory ... can it be achieved?

Technology computer-aided design (TCAD) is the software tool set that allows integrated circuit (IC) technologists to develop new processes and devices without having to build costly test lots. TCAD can potentially provide process engineers the same benefits that electronic circuit CAD (ECAD) has provided to circuit designers. Circuit designers can design, lay out, and test new circuits without fabricating them, and still largely be assured that the circuit will work when manufactured. Will the day come when an engineer can use software to develop a new manufacturing process and predict its performance and yield accurately?