If you want to pinpoint a place and time that the first glints of the Management Century appeared on the horizon, you could do worse than Chicago, May 1886. There, to the recently formed American Society of Mechanical Engineers, Henry R. Towne, a cofounder of the Yale Lock Manufacturing Company, delivered an address titled “The Engineer as an Economist.”

A version of this article appeared in the November 2012 issue of Harvard Business Review.