Using 62 wide-ranging case studies, this book offers engineers, scientists, and managers the operations research/management science (OR/MS) methods needed to reduce uncertainty in committing resources today for results tomorrow. Five strategies are presented for reducing uncertainty in situations involving interacting variables and/or participants. A 12-step OR/MS Protocol has been developed by the author and applied to 10 successful case studies - ranging from American Airlines crew pairing to IBM computer parts inventory - resulting in annual savings of $5 to 500 million.