How Big Things Get Done: The Surprising Factors That Determine the Fate of Every Project, from Home Renovations to Space Exploration and Everything In Between

Bent Flyvbjerg analyzes why nine out of ten mega-projects exceed their budgets and timelines. He introduces the Iron Law of Megaprojects—over budget, over time, under benefits—and identifies the psychological and political causes, such as optimism bias and strategic misrepresentation. The core framework focuses on the philosophy of thinking slow and acting fast. By examining modular construction, like the Burj Khalifa or solar farms, against one-off designs like the Sydney Opera House, the text illustrates how repeatable, scalable systems lead to success while bespoke planning often leads to disaster.

Project managers, homeowners, and executives read this to avoid common pitfalls in large-scale planning. The reader identifies how to build a team with experience rather than just ambition and learns to prioritize the "why" before committing to the "how." The book provides actionable strategies for forecasting risks and using reference class forecasting to predict costs accurately. It offers a practical toolkit for ensuring that a project—whether a kitchen remodel or a massive infrastructure development—actually reaches completion without draining its backers’ resources.