A single overlooked ratio is flashing a rare historical signal. Years of underperformance may have created a powerful setup.
NPR's Sacha Pfeiffer plays the puzzle with KAMW listener Daniel Abramson of Albuquerque, N.M, and Puzzlemaster Will Shortz.
Find out how and why mathematics is used in microeconomics, its limitations, and the math skills that economics students need.
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