Hello - I was just looking around and happened upon the following two sources: http://www.ruby-talk.org/cgi-bin/scat.rb/ruby/ruby-talk/102817 http://rubygarden.org/ruby/ruby?action=browse&id=InterfaceContracts&revision=26 Just out of curiosity, I'm wondering whether there's any further/current information/discussion(s) regarding the implemenation of Interfaces w/ ruby. Thanks!