As already contended in Volume I, most practical books and manuals deal with large, complex projects, which is not unnatural. Using projects to solve problems has never been more popular than it is today. By the end of the last century, 25% of the world’s spending was managed through projects according to some reports, and many projects are clearly very large and very costly. Keeping track of them requires good management and good tools. Project planning and project organization need to be sound, and every step must be controlled down to the last If a large project starts going.