US lottery ticket salesSpotify #1 artist annual streams
American lottery sales and the most-streamed Spotify artist's annual playcount, both climbing. Two completely unrelated industries selling small chances at attention and windfall, sharing the same eight-year ascent.
US lottery sales grew from about 80 to over 110 billion dollars annually across this window. The Spotify number-one artist's annual streams roughly quintupled in the same window as the platform's user base passed 600 million. Two completely unrelated growth stories sharing a window because the same eight years scaled both a state-sponsored low-cost-hope category and an audio-streaming platform.
Two graphs of small attention compounded. The ticket and the stream, both more numerous.
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Want to learn more about why correlations like “US lottery ticket sales” vs “Spotify #1 artist annual streams” don't prove causation? Read our guide to statistical thinking.