Developers Summit 2005 was hold at Feb 3-4 in Japan and Matz guested at a discussion session for 90 minutes. About 150 audiences that filled the room listened to the Ruby’s history and so forth. Kazaana-san, the host, asked them to raise their hands: two thirds had ever used Ruby, twenty used Ruby at office and ten were developers of Open Source projects. Ruby was born at Feb 24, 1993, when Matz h