Drawing on 25 years of research and corporate consulting, forecasting pioneer Spyros Makridakis reveals that a thorough knowledge of the basic rules of forecasting and judgemental psychology can have a pronounced and positive impact on future-orientated decision-making. Building on his unique knowledge of the methods of foreasting and their real-life applications in companies throughout the world, Makridakis presents a non-technical reassessment of forecasting, planning and strategy that may of interest to every manager who has ever struggled with a long-range plan.