Do we need more detailed User Stories / Acceptance Tests?

[nelsonic]

At present our requirements are: https://github.com/docdis/learn-qunit/blob/484e98347b2ce0184a73fb93ff60e8535d435aed/README.md#what-functionality-does-our-stopwatch-need

Do we need to expand on these to help beginners get started with building this app without any help?

discuss