Sure, but the intent of the author seems to be to say that the language can be molded in ways that make it easy to apply in specific domains. Whether that's wi

Sure, but the intent of the author seems to be to say that the language can be molded in ways that make it easy to apply in specific domains. Whether that's with macros or with a DSL-ish approach you're pretty much achieving the same end result. Ruby's blocks make it fairly easy to create DSLs that look like you've actually changed the underlying language in some way - Rails makes heavy use of these features, for example.