The programming languages of today are stuck in a deep rut that has developed over the past 50 years. Although we are faced with new challenges posed by enormous advances in hardware and internet technology, we continue to struggle with old-fashioned languages based on rigid, static, closed-world file-based views of programming. We argue the need for a new class of dynamic languages that support a view of programming as constant evolution of living and open software models. Such languages would require features such as dynamic first-class namespaces, explicit meta-models, optional, pluggable type systems, and incremental compilation of running software systems.