There are many adjectives that one could reasonably use to describe the new open-access textbook, 'Models in Microeconomic Theory' by Martin Osborne and Ariel Rubinstein—terse, rigorous, deep and technically demanding, among them. But to me, the word that best describes their effort is ‘honest’. — Rajiv Sethi, Barnard College, Columbia University, Studies in Microeconomics 9(1) 128â…