The late Andrew Witkin was a Senior Scientist at Pixar Animation Studios and a former Professor of Computer Science, Robotics, and Art at Carnegie Mellon University. Prior to joining the Carnegie Mellon faculty, he was director of the Perception and Graphics groups at Schlumberger’s Palo Alto Research Lab. He received his BA from Columbia College in 1975 and his PhD from MIT in 1980. The primary goal of his research was to create new interactive computer modeling media based on real-time physical simulation and control. Dr. Witkin published extensively in the areas of Computer Vision and Computer Graphics.