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attle. Many contenders have tried to spell its demise, but C++ has remained undefeated ruler in one niche: high-performance systems with difficult modeling challenges. Between the halt of Moore's law for serial speed and the continued demand for performance, one thing has become clear: a replacement for C++ must be good at what C++ is good at, and good at what C++ is bad at. The D programming language is that contender. It packs much more punch in a much smaller package. Better yet, D has the flexibility to compete against other languages on their own turf. This talk gives an introduction to the D programming language along with its motivation and basic tenets. The person who asks the more intriguing question wins a signed copy of the recently-published "The D Programming Language". Andrei Alexandrescu coined the colloquial term "modern C++", used today to describe a collection of important C++ styles and idioms. His eponymous book on the topic, Modern C++ Design (Addison-Wesley, 2001), revolutionized C++ programming and produced a lasting influence not only on subsequent work on C++, but also on other languages and systems. Andrei's work has garnered appreciation in both industrial and academic circles through is work on C++ and on Machine Learning applied to natural language. Since 2006, Andrei has been second-in-command to Walter Bright, the D programming language inventor and initial implementer. Andrei co-designed many important features of D and authored a large part of D's standard library, as well as the recent book "The D Programming Language". Andrei holds a PhD in Computer Science from the University of Washington and a BS in Electrical Engineering from University "Politehnica" Bucharest. He works as a Research Scientist for Facebook.