[Incommensurability, Incomparablility, and Practical Reason] is not only an extraordinary collection of all-stars, it contains original papers by just about all the all-stars that have been most insightful in helping us think about issues of incommensurability...Everyone with a real interest in incommensurability must closely study this book.Can quite different values be rationally weighed against one another? Can the value of one thing always be ranked as greater than, equal to, or less than the value of something else? If not, when do we find commensurability and comparability unavailable? What are the moral and legal implications? In this book, philosophers address these questions.