Distinguish better between "discovery" and "capability exchange"

[AdrianFarrel]

See section 5.2 of Problem Statement.
This could be fleshed out, but also may need to be said earlier in the document (with a pointer to 5.2)

The Terminology and Requirements may also need to call this out.

Jim supplied:

1. Entity1 does discovery based on the minimum viable data (protocol, identifying properties) <-- In DAWN scope
2. Entity1 talks to entity2 (found in step1), exchanging additional data, checking capability, negotiating stuff, etc. <-- DAWN needs to be aware of this but likely OOS, although DAWN bootstraps this
3. Entities then do their thing, which can include going back to step 1 either for addition things as part of a larger process or because there is a need to start again

Dan observed that this is part of the description of the lifecycle

[HeshamGmoussa]

Is this issue still a concern?

[AdrianFarrel]

The Terminology I-D is fixed by #62
Problem Statement and Requirements need attention