This document discusses data, information, and information systems. It defines data as raw facts and information as data that has been manipulated and given meaning and context. An information system takes data as an input, processes it to generate useful information as an output. The document also discusses how humans and computers can work together synergistically in information systems by leveraging their respective strengths. Finally, it discusses some of the ethical and societal issues related to information systems, such as threats to privacy and increasing social inequality due to unequal access to technology.