(Don't forget to vote for SIGACT posistions:here  9th workshop on Flexible network design, May 22-25 at College Park, here.) My first poston G4G13 is arguably here. To see why its debatable, see that post. FOXTROT HALF-EMPTY, HALF-FULL PROBLEM, INCLUDING 13 by Thomas Francic Banchoff In a Foxtrot cartoon (see here) Foxtrot has a glass which looks like it is half-full (or half-e