I'm so clueless as you. From http://rubini.us http://rubini.us you can read "An environment for Ruby, the programming language that provides performance balanc

I'm so clueless as you. From http://rubini.us http://rubini.us you can read "An environment for Ruby, the programming language that provides performance balanced with accessibility, focusing on improving programming productivity" The thing is, in this context, what is "an environment for ruby"?