Price decisions made at different times can lead to slow adjustments in prices, causing inertia in the overall price level. Even small delays in price adjustments can result in significant price level inertia. When prices are not synchronized, changes in money supply can impact economic activity, but slowing down money growth can reduce inflation without harming output. Goods at the beginning of production chains have more price variability than those further down. Price inertia caused by desynchronization may be hard to eliminate, as no one has an incentive to change their timing.