I wrote my latest monograph, Turning the Flywheel, to share new and practical insights about the flywheel principle, inspired by its wide-ranging impact in recent years. At one end of the spectrum there are fast-growing companies like Amazon, which has consciously harnessed the flywheel effect to feed its momentum machine. At the other end of the spectrum, there is the delightful discovery of a rural Kansas public elementary school using the flywheel to elevate the learning of children.