Somewhere in the vast indifference of the cosmos, a Chinese e-commerce platform and American public libraries have been moving in perfect opposition for thirteen years, like dancers who have never met but somehow share an invisible choreographer. One goes up, the other goes down, a synchronicity so precise that you begin to suspect the universe is playing a practical joke on statisticians. The joke, naturally, is on us for noticing.
The culprit is almost certainly not libraries plotting against consumerism, but rather the great cultural pivot toward screens that happened to accelerate during this exact window. Alibaba Singles Day exploded from a niche Chinese phenomenon into a global shopping phenomenon as smartphone penetration and internet infrastructure matured, particularly after 2015, while American library visits declined as that same technology made physical browsing of books feel quaint. Consider that in 2009, only about 25 percent of Chinese internet users had participated in online shopping; by 2021, Alibaba was processing orders at a rate that would require stacking $100 bills higher than an airplane flies. Meanwhile, American libraries were competing for the same leisure time and the same human attention spans, which increasingly preferred the convenience of a phone screen to the commitment of a building visit.
What we have stumbled upon is not a causal relationship but rather two different responses to the same underlying shift: the great migration of human behavior from atoms to electrons. Libraries and Singles Day sales are not enemies in a cosmic struggle, but rather distant cousins reacting to the same technological earthquake in entirely different ways. In 2009 they were at peace; by 2021 they had simply become opposites in someone's spreadsheet, which may be the most human thing we do.
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Want to learn more about why correlations like “US public library visits” vs “Alibaba Singles Day sales” don't prove causation? Read our guide to statistical thinking.