Thanks! Ruby 1.9 and Rubinius are both "Ruby VMs", while Ruby 1.8 is an interpreter, and IronRuby/JRuby leverage existing VMs. In this case, Evan, who works on

Thanks! Ruby 1.9 and Rubinius are both "Ruby VMs", while Ruby 1.8 is an interpreter, and IronRuby/JRuby leverage existing VMs. In this case, Evan, who works on a Ruby VM, was looking at Ruby 1.9, another Ruby VM ;)