Global data created per year

As global data creation has exploded, the number of podcasts has grown with near-perfect correspondence, a correlation of 0.990 that is almost tautological: podcasts are data. Every episode uploaded to Spotify or Apple Podcasts adds megabytes to the global total, making this correlation less a spurious relationship and more an accounting identity wearing a scatter plot disguise. The data includes the podcasts. The podcasts generate the data. The chart is measuring itself.

Both exploded in 2020 for the same reason: the world suddenly had far more to say, and far more ways to say it. Lockdowns pushed an enormous amount of human activity online — video calls, streaming, cloud backups — while the podcast count surged as millions of first-time creators turned their empty commute into a show. Two versions of the same sentence: the pandemic digitized everything.

Nine years of data and podcasts growing together is a correlation that borders on tautological: the podcasts are a subset of the data, and the data includes the podcasts. The relationship is real, direct, and about as spurious as noting that ocean volume correlates with the amount of water in the ocean. The episode uploads, the zettabyte accumulates, and the chart draws a line through its own reflection.