This document discusses using big data in human resources. It addresses common concerns about using data, such as that it is too complex or difficult. The document emphasizes using data to understand causes rather than just correlations and highlights metrics that HR professionals should measure like time to hire and turnover rates. It also discusses process improvement frameworks like Six Sigma, Lean, and Theory of Constraints that can help organizations remove waste and inefficiencies. The overall message is that data can help HR functions achieve strategic goals and improve performance if organizations look past preconceptions and learn to question existing practices.