Robercon, the annual science fiction convention at the Roberson Museum and Science Center, is this weekend, Saturday and Sunday, September 30 and October 1. Five years ago the first convention was such an overwhelming hit that it had to be expanded to two days, with table-top gaming moved to the Binghamton High School. Organizer Chris Kocher talks about the discussion groups and the special guests, and some of the events that he is especially excited about.https://wskg.org/audio/robercon.mp3 Photo credit: Chris Kocher for Robercon