This document discusses how services like Uber and Zipcar built their businesses by rethinking workflows and optimizing for how the world should work rather than how it currently does. It provides examples of how Uber improved on the taxi experience by allowing passengers to hail rides from anywhere, see driver and car details, and pay without hassle. The document also discusses how these types of services combine computers and humans, using technology to augment humans and humans to augment technology through new kinds of "human-machine symbiosis". It argues we are now building new business processes and data infrastructure that operates "above the level of a single device".