The principal difference between this book and other technical analysis books is that we are looking at measures of momentum in economic data with the intent to discover technical signals of long-term market price changes. In other words, when an economic series system gives a sell signal, it will apply not necessarily to the economic data itself but to stock market prices. It may also signal an economic recession, but we are now concerned with profiting from the market direction, not the economy’s direction. The systems we create are from moving average crossovers of economic data. These crossovers will give us specific buy and sell signals that we test using sophisticated walk-forward optimizing methods for reliability and predictability. The final market-timing model includes the best of these systems.