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249 points jaboutboul | 1 comments | | HN request time: 0.209s | source
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nomilk ◴[] No.42131622[source]
As a former user of in-trade and more recently of poly market, it is so annoying that there are laws against these sites. They serve an incredibly important function: letting people learn what’s happening in the world around us by observing a single number (e.g. % win probability).

I most receently used the site yesterday to see what the incumbent Australian government’s reelection chances are after they tabled ‘ID and age requirements to use social media’ laws, but polymarket didn’t seem to have Australian politics odds, so I was left using oddschecker, which is inferior due to the annoying way it displays odds and it not storing historical data.

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Terr_ ◴[] No.42131721[source]
> letting people learn what's happening in the world around us

I think that phrasing is a bit too optimistic. Even in cases where the "prediction" cannot influence the outcome, the primary "learning about the world" involves the imputed opinions of bettors.

Betting at horse-races doesn't teach you nearly as much about horses as actually going to the stables. :P

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seizethecheese ◴[] No.42131797[source]
These imputed opinions tend to do a better job than traditional news. On election night, polymarket was ahead of the news channels every step of the way.

Edit: to be clear, I’m referring to polymarket essentially “calling” each swing state well before the networks did. I’m not just referring to the overall outcome.

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fn-mote ◴[] No.42132072[source]
Making these statements after the fact is tricky.

Very tricky.

I would be interested in a blog post explaining it.

The classical fallacy is attributing skill to someone who has successfully predicted 10 coin flips (or market trends) in a row, ignoring the fact that there were many other people making different predictions and there was always going to be one of them who was successful.

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1. seizethecheese ◴[] No.42132280[source]
Of course this is true, and the observation is underpowered. However, on election night it wasn’t just about being right it was about digesting information in real time and promulgating information faster. For example, polymarket had trump at like 99% likelihood of winning when the networks were still playing “horse race”.