We're designed for meaningful work. It gives us a sense of purpose, which is innate and imperative to feeling fulfilled. Even earthworms are purposeful in their work; they know instinctively to move through the dirt for a greater goal. Just the idea of purpose drives much of our efforts, both at work and in service. From the TED stage, Dan Ariely explains how some people will quit working, even for higher pay, when they infer that the efforts are meaningless. Some people find significance...