The first day of class is always a bit funny because, for a variety
of reasons, we can never really know what background people have coming
into the class. That means we have to get started by going over a
selection of things to try to get people on the same page. That isn't
to say all of this information is basic--no indeed. Some of these are
deep concepts that no single course would ever fully sketch out. But we
need to get started introducing them right away.
These are some of the ideas shared by the winter 2006 class in our
first day discussions, and a few additions of my own.