"In matching markets, where 'sellers' and 'buyers' must choose each other, some surprising rules govern a vast array of our activities -- both mundane and life-changing -- where money has little or no role in who gets what. From applying for a job to asking someone out on a date, or getting your child into the best school or university, matching plays a crucial and invisible part. It accounts for some of the biggest technological successes of the decade, like Uber and Airbnb, and can even be the gatekeeper of life itself, guiding how desperately ill patients receive scarce organs for transplants. Nobel Prize-winner Al Roth is one of the world's leading experts on matching markets. He even designed several of them, including the system that increases the number of kidney transplants by better matching donors to patients. In Who Gets What and Why, his life's work provides an x-ray of the market designs you don't see. It shows how to recognize a good match and make smarter, more confident decisions"-- Jacket.