Moving beyond the traditional regulatory sphere and its preoccupations with deregulation and efficiency, the authors trace the complex relationships between instrument choices and governance. Designing Government encourages the reader to consider factors in the design of complex mixes, such as issues of redundancy, context, the rule of law and accountability. These latter factors are especially central in today's world to the design and implementation of effective instrument choices by governments and, ultimately, to good governance. The authors conclude, in fact, that seeing instrument choice itself as part and parcel of designing government and achieving good governance is both the promise and the challenge for instrument-based perspectives in the years ahead.