When/which level of UC description to be generated?

[chachamimm]

From the previous minutes:

Cristiano: do we always create a use case?
McCool: User story should be the starting point.
... e.g., I need this capability as a user
... motivating the use case captures stakeholder's need
McCool: sometimes could allow to start with missing features
... not only top-down but also bottom-up approachI need this capability as a user motivating the use case captures stakeholder's need
Kaz: we could start with the top-down flow first and then think about bottom-up flow later

[egekorkan]

I think this is dependent on #257 so we should solve that first.