13 years in the making, James Cameron's new film "Avatar: The Way of Water" is, true to the filmmaker's ethos, a technical marvel of the highest order. Set on a distant alien moon, the film is about a war between the honorable, nature-loving Na'vi and a cadre of vengeful human super-Marines who team up with evil whalers to hunt down the film's protagonists. The Na'vi are nine-foot tall, blue-skinned, large-eyed creatures, and are visually realized with advanced motion-capture technology....