Book excerpt: The stories in this volume explore new frontiers in the way we do chores, eat takeout, order online, and dumpster-dive, showcasing business's rapid evolution under the influence of new technologies. Profiles include the amusing portrait of a young investor who made a fortune betting on penny stocks; the inspiring and cautionary story of an undocumented immigrant who became a star trader at Goldman Sachs; and the shocking account of a troubled financial prodigy who defrauded his inner circle of millions.