Deloitte is a large professional services firm with over 7,000 people worldwide focused on big data analytics. They have data laboratories, visualization environments, and predictive analytics centers. Some key challenges for big data include over-reliance on technology, selecting the wrong data, and mistaking correlation for causation. Deloitte identifies seven trends in big data: ensuring the right talent, using visualization techniques, machine learning finding applications, data discovery platforms, using data for social good, rise of predictive analytics, and the declining need for traditional data warehouses.