WESTWOOD — The hero plunges into a stream that flows and glows like liquid crystal. His muscular legs drive him through the gleaming water toward the lavish grass on the opposite shore. It’s a lovely scene, idyllic and utterly unreal. The wading man creates no wake, no splashes, not even a ripple. Aatish Salvi notes the absence of water turbulence and apologizes for it. His team of software engineers hasn’t yet added that feature to the scene. [More]