Sciencespeaking topic
Ask hundreds of people one by one to guess the weight of an ox and average their guesses, and the result is often more accurate than the expert butcher's. How can a crowd know so precisely when none of them alone does, and when does this flip into mob madness?
— wisdom of crowds / Galton's ox experiment
practice with this topic
Set the timer (5-30 min), take 20 seconds of prep if you like, start talking. Jot your thoughts onto the sticky-note board.
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