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  • Bill Levien thinks this is interesting:

User Stories Are Not Requirements

Although user stories do most of the work previously done by software requirements specifications, use cases, and the like, they are materially different in a number of subtle yet critical ways.

• They are not detailed requirements specifications (something a system shall do) but are rather negotiable expressions of intent (it needs to do something about like this).

They are short, easy to read, and understandable to developers, stakeholders, and users.

• They represent small increments of valued functionality that can be developed in a period of days t...