In every product team there are dozens of assumptions masquerading as knowledge. Cindy Alvarez talks about why challenging these assumptions is not only a good idea, but is necessary to the work we do as "product people."

Cindy Alvarez is the Director of User Experience for Yammer (a Microsoft company), and the author of Lean Customer Development: Build Products Your Customers Will Buy. Cindy is a frequent speaker on UX, Lean, and tech culture.