Stack Overflow questions per yearEnergy drink sales in the US
As energy drink sales have grown, Stack Overflow questions have declined, a negative correlation of -0.976 that sounds like caffeinated developers stopped asking questions and started just coding harder—but actually reflects AI assistants replacing the need for both human help and possibly human wakefulness. The Monster is consumed, the question is not asked, and the chart maps the transition from "Google it and ask on Stack Overflow" to "let the AI handle both."
Energy drinks grew from about 12 billion to over 20 billion between 2015 and 2023. Stack Overflow questions declined from about 12 million to about 5 million. One rises, the other falls. Energy drinks grow because of demographic demand; Stack Overflow shrinks because of AI displacement. The caffeine does not replace the question—Copilot does—but both trends are measured during the same nine years of technological disruption.
Nine years of more energy drinks and fewer questions is a correlation between a stimulant rising and a platform declining during the same AI revolution. The developer drinks the Monster, asks ChatGPT instead of Stack Overflow, and the chart records both as signs of the same era. The caffeine is consumed. The question is automated. The developer is wired but silent.
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Want to learn more about why correlations like “Stack Overflow questions per year” vs “Energy drink sales in the US” don't prove causation? Read our guide to statistical thinking.