Show that a concordance allows various activities to succeed that would have been difficult previously.
Example
To compare reports prepared against standard A with reports prepared against standard B, one needs a concordance that says how to translate reports so that they are all against the same standard.

A concordance could be a list of assertions that simply map from taxonomy A
to taxonomy B:

A concordance could be more detailed so an assertion could show how to translate whole tables rather than just concepts:
- From dimensional to non-dimensional
- Items that do not map to target taxonomy
- A sum of multiple source items
