Why use PROV page

Hi Craig,

I've put up your content about use case summaries on the page

http://www.w3.org/2011/prov/wiki/WhyUseProv

I like the style of the cases:

What is xxx?

How Provenance can help?

but I think we should also have

The role of PROV

Also, can we do these for the other summaries? but maybe even punchier.

Thanks!
Paul