Hal Fulton, author of <a href="The">http://www.informit.com/store/ruby-way-solutions-and-techniques-in-ruby-programming-9780321714633">The Ruby Way</a>, points out some of the extensive changes Ruby has experienced in less than a decade. By paying attention to why and how programming languages evolve, we can learn from experience and past mistakes, deliberately changing the language (and especially our usage of it) for a better future.