Just wanted to draw your attention to a discussion that Will and I (and soon, perhaps, you?) are having in the comments of the DSU post.
It started out answering a question Ben posed about what the core one minute of gameplay in Ars Magica might be, and is evolving into a pretty interesting discussion of the extent to which that concept has relevance to tabletop roleplyaing in general, and ArM specifically.
Be aware that, in said comments thread, I have recently given up on italicizing the proper names of games. Kate Turabian is presumably outraged.
So, jump in! Italics optional.