This document discusses the changing relationship between computers and people over time. It begins by noting how computers have transitioned from being used primarily by professionals in laboratories to being ubiquitous tools used by billions worldwide for a variety of everyday purposes. The document then provides examples of early computer systems and users to illustrate this transition. It discusses how the field of computer science has long been interested in studying human aspects of computing through areas like artificial intelligence, human-computer interaction, and analyzing social networks. The document concludes by emphasizing the growing importance of usability and studying people as computing continues to become more integrated into everyday life and society.