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Choiceology · May 20, 2024 · 31m
Copy That: When Imitation Leads Us Astray
The dark side of social proof. Explores how our tendency to copy others — a normally adaptive heuristic — can lead to herding, information cascades, and collective errors when the crowd is wrong or uninformed.
Canon
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Milkman: social proof ('everyone else is doing it') is the single most effective behavior change tool. But its power makes it dangerous — falsehoods and bad behaviors spread just as effectively as truths and good behaviors when social proof amplifies them.
Highlights
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Information cascades — rational individuals copying others can produce irrational collective outcomes
Milkman: when people observe others' choices and follow suit, each new imitator adds no new information but increases the apparent consensus. This creates information cascades where millions of people can converge on a wrong answer because everyone is copying everyone else.