If you’ve ever taken an Uber you know that you give your driver a rating at the end of your journey. You probably know that their job depends on how good their average score is. But do you know how high that score has to be before they are essentially fired? And did you know the drivers can rate you too? Alex Rosenblat, author of the new book Uberland: How Algorithms are Rewriting the Rules of Work, joins us to go behind the scenes on what your drivers are dealing with and the difficult choices they often have to make.