The document discusses how big data is revolutionizing mobile products. It argues that big data 1.0 focused on storage, while big data 2.0 focuses on end-user applications. It advocates building "crystal balls" instead of systems, where crystal balls can instantly answer any question without needing setup like systems. Crystal balls understand users without needing to be understood, which is important for mobile where users expect instant, contextual answers. The opportunity for data analysis to power personalized, predictive mobile experiences is huge.