"If it wasn't compatible with existing Ruby and you couldn't use existing Ruby with it, why would you be happy to call it Ruby?" Im happy calling clojure a Lis

"If it wasn't compatible with existing Ruby and you couldn't use existing Ruby with it, why would you be happy to call it Ruby?" Im happy calling clojure a Lisp? Why not call this new 95% similiar language by what it is - a Ruby? If it were 20-25% similar (elixir) or even 60% I could call it ruby like X lang and be done. Thats not what the point Ive been trying to make though. When is an object a bowl and not a cup? Is it when it loses its handle? What about if it has a handle but is wide and open and deep? I personally dont think its as binary as your making it out to be (100% compatibility yes/no). If this were the case there would a canonical Lisp and no one else could refer to a lisp as such. "Like ISO/IEC 30170:2012?" No, that hasnt been revisited since 2010 was for ruby 1.8.7, and doesnt include the whole standard library, which means if you want to accept that youd have to throw out your argument because by your very definition it couldnt be a spec for a Ruby since it doesnt include all exact behavior like mri.