Global smartphone shipmentsPer capita coffee consumption in the US
It turns out that the number of rectangular glowing rectangles humans feel compelled to carry around the planet correlates almost perfectly with how much they've decided coffee tastes better, which is to say: very much. One might think these two phenomena occupy entirely separate corners of human experience—one being about technology and connectivity, the other about a bean juice—but apparently they have been moving through the world together like an old married couple who no longer speak but somehow always end up at the same restaurant. The universe, it seems, has a peculiar sense of coherence about caffeine consumption and smartphone logistics.
The most likely explanation is that both are quietly following the same underlying economic expansion in developed nations, particularly the United States. Smartphones got cheaper and more ubiquitous between 2009 and 2022 while simultaneously, Americans developed an almost pharmacological relationship with specialty coffee culture—third-wave coffee shops, pour-overs, the whole business—which tends to flourish precisely when disposable income is rising. You're looking at roughly a 400 percent increase in global smartphone shipments over this period paired with an American per capita coffee consumption jump of about 15 percent, which sounds modest until you realize that's roughly equivalent to adding an entire cup to the daily ritual of every coffee drinker in the country, and these things track together so tightly it's almost eerie.
What we're witnessing is probably not causation but rather two separate expressions of the same underlying cultural moment: affluence, connectivity, and the human need to have something warm and slightly bitter in hand while staring at the glowing rectangle. The correlation feels like a cosmic prank played by the universe on statisticians who can't help themselves from connecting dots that happen to be traveling in the same direction. Neither explains the other, but together they document a particular kind of earthling behavior: caffeinated and perpetually reachable.
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Want to learn more about why correlations like “Global smartphone shipments” vs “Per capita coffee consumption in the US” don't prove causation? Read our guide to statistical thinking.