"From the dead reckoning of early navigation with its reliance on sun, stars, and wind, Vaughan develops her analysis of the present-day work of an air traffic controller, which involves an increasingly high degree of automation with consequent loss of skills and many controllers’ jobs. Drawing on interview data, Vaughan illuminates what has made air travel so safe by examining the large sociotechnical systems in which work is performed, focusing on the changing nature of organizations, technologies, and work. Recommended."