Note that Project 2 is worth 20 points, and not 15 points as originally
announced.  Project 4 will be worth 15 points, and not 20 points.

     Good news:  The Project 2 due date is extended to Sunday, Oct. 11 at 5pm.
     Bad news:  We disclaim all responsibility to give you any help on the
       weekend.  Please try to have your project well on its way, and ask any
       questions you have, by Friday.  The TAs and professors might answer the
       newsgroup on the weekend, or might not.  Unfortunately, the person who
       wrote the assignment (me) might not be in Berkeley.