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Acknowledgments We would like to express heartfelt appreciation to our talented, hardworking, and ever-positive editor, Kyra Ostendorf. This book is much richer for her ideas, guidance, and smiles—those given in person and those that arrived through electronic communication ;-). Thanks to Elena Fultz and Grace Fowler, interns at Redleaf Press, who assisted in technical editing. We are grateful to David Heath for his initial editing support and encouragement. And, of course, we want to acknowledge all the individuals we have had professional encounters with over the years, as each contact has helped us grow and has enhanced our work. ix