[Matthew Sag] Abstract: Individually and collectively, copyrighted works have the potential to generate information that goes far beyond what their individual authors expressed or intended. Various methods of computational and statistical analysis of text — usually referred to as text data mining (“TDM”) or just text mining — can unlock that information. However, because almost every use of TDM involves making copies of the text to be mined, the legality of that copying has become a fraught issue in copyright law in United States and around the world.