1.   It should also serve as a warning against using the concept of social class in a crude explanatory manner.

2.   To separate as far as possible the concepts of equity and efficiency, economists use the concept of Pareto efficiency.

3.   Use concepts across the frontiers of knowledge.

4.   What concepts can be used to characterize those systems that are not democratic?

5.   This paradox has been considered by Dyl and Hoffmeister who used the concept of duration to show that there might be a relationship between dividends and beta.

6.   A fundamentally different analytical method is to use the concept of bibliographical coupling to construct clusters of co-citing journals.

7.   A RDBMS uses the concept of the table as its basic structural entity.

8.   Key thinking processes in history revolve around the interpretation of different kinds of evidence, often using specialised concepts.

9.   Consequently, there is a need for considerable caution about using concepts such as MES as a firm guide to assess potential economies of scale.