"The Banning segment of the San Andreas fault in southern California is associated with an average rate of background seismicity. This seismicity is scattered throughout the region and does not simply delineate the major strands of the late Quaternary faults. Some of this seismicity is caused by distributed deformation across the region because the southern San Andreas changes directions from northwest to the south of Banning to west-northwest near Cajon Pass."
http://www.cisn.org/special/evt.05.06.16/
It's kind of fun to pretend to understand which cog or stress point will break next, and we can make some guesses based on what little history we really have of the process.
I think we do understand it enough to know where the major faults are, and the biggest fault line is the San Andreas running from east of Los Angeles to a point somewhat north of San Francisco. No news to anyone here.
It's going to keep chugging along and breaking as long as any of us are alive, and for quite awhile afterward.