US utility patents granted

Between 2002 and 2022, US bowling centers declined while utility patents granted increased, producing an inverse correlation of -0.9625 across twenty-one years. Robert Putnam wrote Bowling Alone in 2000 about the decline of American social capital, and the data has spent the subsequent two decades proving him right while demonstrating that the nation redirected its energy from rolling balls at pins to filing intellectual property claims. America stopped bowling and started inventing, and the r-value of -0.9625 is the most concise summary of 21st-century economic reallocation ever produced by accident.

Bowling centers declined from roughly 6,000 to under 3,500, as the sport lost participation to digital entertainment. Patents granted grew from 150,000 to over 350,000, driven by tech industry IP strategies. Both are 21-year trends reflecting the shift from physical recreation to knowledge-economy activity.

Twenty-one years of a recreational industry declining and an intellectual property system expanding will produce a strong inverse correlation. The bowling alley and the patent office describe the same economic transition from different angles.