Technological level of a society is supported by its technological capability. The technological capability can be divided into two functions. Static capability permits the society to keep the present level of the production techniques. Dynamic capability is expressed by its ability to induce innovations. Innovations comprise (1) changes of productivity or efficiency of production techniques and (2) introduction of new goods and services. They are often studied under the subject National (or Regional) System of Innovations. However, these two functions are not well differentiated and seems to provoke a grave confusion or conflict. A typical example is the long debate between comparative advantage and competitive advantage. Comparative advantage is a notion related to static concept whereas the latter refers to dynamic concept. How do you think of this under standing.