It seems appropriate to end this volume with a few words about why we have selected and organized the material as we have, and what we think has been learned. To put it another way, now is a good time to explain the title of the book, which includes both "modeling" and "analysis." The fact that the book contains many theorems should suggest what the analysis consists of. And the fact that we began the book with a detailed description of a particular labor market and with a brief description of some auction phenomena, should suggest at least part of what we mean by modeling. But if that were all there was to it, we could have finished our work in many fewer chapters.

Instead, we analyzed a whole family of closely related models, discrete and continuous, with and without complete information, with and without money, with firms employing one worker or many, and with simple or complex preferences. One purpose of these final remarks is to make clear what we think the consideration of all these models together adds to our understanding and interpretation of each of them.