I want to thank my wife, Hope, for her encouragement and for tolerating all the time I spent working on this book, and Tom Hill, EDS Fellow, for his encouragement and support on this effort. I owe many co-workers at EDS and collaborators at OMG for insights I have gained over the years—in particular, at EDS, Jef Meerts, Wafa Khorsheed, Carleen Christner, Ivan Lomelli, and the EDS Fellows community; and at OMG, Cory Casanave, Antoine Lonjon, Conrad Bock, Donald Chapin, John Hall, Manfred Koethe, Karl Frank, Henk de Man, and many others. Finally, I want to thank Richard Soley for his support and for writing the Foreword to this book and John Parodi for his thoughtful editorial comments.