Comment by scoofy

>Just want to reiterate that prediction markets are beneficial, because they are the most accurate way to provide us with a dynamic mechanism to predict future outcomes from complicated systems.

I'm sorry, but no, this is just absolutely wrong.

If everyone was making these predictions, in good-faith, then yes it would "provide us with a dynamic mechanism to predict future outcomes from complicated systems." However, when truckloads of money is involved, then insiders actually want to have the markets be weighted incorrectly to maximize gain at exactly the point where vega and theta are minimized... at the very last second possible.

Market reflexivity exists and undermines this entire thesis. People need to stop pretending everyone out there is a nice man like Nate Siver just doing this for fun. As long as insiders exist and are allowed to trade, then they have every incentive to induce misinformation until the very last moment when they can trade against it.