The document discusses big data in healthcare, where it currently stands and its future potential uses. It explains that while big data is not necessary for most healthcare organizations currently, emerging technologies like wearable devices and whole genome sequencing will generate large amounts of diverse data requiring big data solutions. It also outlines some barriers to big data adoption in healthcare like a lack of security and need for data science expertise. The document envisions future applications of big data like predictive analytics, using additional data sources to better predict patient outcomes and needs.