make this longer It's challenging because they have to project changes in real GDP before they happen. also as a result of the numerous variables that affect output levels. For governments and corporations to effectively respond to impending threats, decision makers must be accurate. Leading indicators, such as the stock market, intertest rate, and conference board, are examples of tools. Businesses wouldn't build new factories if they anticipated a contraction. Additionally, government policy makers would take extra precautions to stop and avoid a recession if they anticipated one