On January 22, 2013, Alexander Demling writes in Spiegel-Online about an interview with Danish mega-project expert Bent Flyvbjerg, a professor of urban planning at the University of Oxford, regarding the projects Elbphilharmonie, Stuttgart 21, and Berlin Brandenburg Airport (BER). In this interview, Flyvbjerg states, among other things: "Most project managers are either fools or liars." However, this book does not seek to identify those responsible for the delays and immense cost overruns of these mega-projects. Instead, it describes practical means and measures that, if consistently applied, could prevent such failures in the future. In particular, it details how to create a project specification using value analysis, which serves as an important foundation for project execution and is crucial for avoiding misdevelopments. This is also confirmed by a study from the Hertie School of Governance: "Early planning mistakes often trigger a cost spiral." Furthermore, it explains how value analysis can achieve a systematic approach in project execution. The author appeals to those responsible at the federal, state, and municipal levels to implement value analysis in future large projects, as has been practiced in the USA for many years. The book is also recommended for students interested in project management.