Because a use-case model is defined from a business analyst's view, it provides a level of abstraction that's a useful communication tool for project stakeholders.

You can easily take the lessons from this article and apply them to petabytes of logfiles; that is the essence of why the MapReduce abstraction is a useful tool, especially in a cloud environment.

Chimps can do all sorts of things we thought that only we could do - like tool-making and abstraction and generalisation.