Cohen and Zysman (1987) wrote about the ``myth" of the postindustrial economy and Dertouzos, Lester, and Solow (1989) popularized the idea that only manufacturing matters to a modern economy. The arguments presented by these and other authors depict service businesses as a mere derivative activity of a manufacturing-based economy, which would surely dry up and fade away as manufacturing was withdrawn.

Explain the validity of the above situation.