US utility patents granted

Between 2002 and 2022, the number of golf courses in the United States declined while utility patents granted climbed relentlessly upward, producing an inverse correlation of -0.9664 that may represent the single most accurate description of American economic history ever generated by accident. The nation, it turns out, was converting its recreational land into intellectual property at a statistically provable rate. Every fairway that closed was apparently replaced by a patent application. One imagines the former golfers, deprived of their courses, going home and inventing things out of spite.

Golf course numbers in the US peaked around 16,000 in the early 2000s and declined to roughly 14,000 by the 2020s, as the sport struggled with declining youth participation, high maintenance costs, and competition from other leisure activities. US utility patents granted grew from around 170,000 in 2002 to over 350,000 by the early 2020s, driven by expanded R&D investment, globalization of IP filings, and tech industry growth. Both trends reflect the same structural shift in the American economy: away from land-intensive leisure industries and toward knowledge-economy activity.

When an economy pivots from physical infrastructure to intellectual capital, you will find negative correlations between the old world and the new in almost any dataset you choose to examine. The golf course and the patent share a story; the correlation just doesn't know which one it's telling.