-GIT comes in two layers. The bottom layer is merely an extremely fast
-and flexible filesystem-based database designed to store directory trees
-with regard to their history. The top layer is a SCM-like tool which
-enables human beings to work with the database in a manner to a degree
-similar to other SCM tools (like CVS, BitKeeper or Monotone).
+This is a stupid (but extremely fast) directory content manager. It
+doesn't do a whole lot, but what it _does_ do is track directory
+contents efficiently. It is intended to be the base of an efficient,
+distributed source code management system. This package includes
+rudimentary tools that can be used as a SCM, but you should look
+elsewhere for tools for ordinary humans layered on top of this.