I am indebted to many people for the help they gave me in the writing of this book. lowe a large debt to David Lewis and Robert Stalnaker, on both general and specific grounds. As becomes apparent from reading the notes, the book would not have been possible without their pioneering work on subjunctive conditionals. In addition, both were kind enough to provide specific comments on earlier versions of different parts of the book, and Stalnaker read and commented on the entire manuscript. Closer to home, I am indebted to my colleagues Rolf Eberle and Henry Kyburg, Jf., my erstwhile colleague...

I am indebted to many people for the help they gave me in the writing of this book. lowe a large debt to David Lewis and Robert Stalnaker, on both general and specific grounds. As becomes apparent from reading the notes, the book would not have been possible without their pioneering work on subjunctive conditionals. In addition, both were kind enough to provide specific comments on earlier versions of different parts of the book, and Stalnaker read and commented on the entire manuscript. Closer to home, I am indebted to my colleagues Rolf Eberle and Henry Kyburg, Jf., my erstwhile colleague...