Yeah, that claim was always ludicrous to me too. Wisdom-of-crowds isn’t an unbiased decision making strategy, it’s quite biased. Crowd-wisdom works best as a limiter on the bias of other decision making strategies—this is why democracies use representatives rather than direct votes for most decisions.
And polymarket isn’t even the wisdom of crowds lol. At its greatest possible adoption it’s still the wisdom of internet-connected (mostly) white men with time and money to spend on gambling.
If you believe Polymarket odds are wrong in a systematic way then you are free to make a lot of money out of it. Unlike the stock market, where "Markets can remain irrational longer than you can remain solvent", any such irrationality will become irrelevant at settlement time.
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