Econlib Editor's Notes

The text has been altered as little as possible from the original edition (Risk, Uncertainty, and Profit, Frank H. Knight, Ph.D., Associate Professor of Economics in the State University of Iowa; Boston and New York, Houghton Mifflin Co., The Riverside Press, 1921).

A few corrections of obvious typos were made for this website edition. However, because the original edition was so internally consistent and carefully proofread, we have erred on the side of caution, allowing some typos (such as for proper nouns and within references) to remain lest someone doing academic research wishes to follow up. We have changed small caps to full caps for ease of using search engines.

All graphs were scanned from originals at their original size, though a few are reduced within the text for readability. They can be accessed at full size in separate windows by clicking on them.