From: "Pat Maddox" <pergesu / gmail.com> > > Wouldn't it be a lot nicer to do > > class DontTouchMe > include Freezable > end > > to ensure that nobody messes around with it? Should we start by closing the String class, then? :) What sorts of classes do you think should be made closed? And why is the author of the class in the best position to determine whether or not it should be open? Regards, Bill