prediction-markets
Skin in the Game: Why Prediction Markets Outsmart Polls
A look at why platforms like Polymarket accurately called the last US election when traditional pollsters failed, and what "skin in the game" means for finding the truth.
We the people - but which people? The ones who answer polls, or the ones who put money on Polymarket?
The Mechanics of Polymarket
For anyone who hasn’t come across it yet: Polymarket is a prediction market where people bet real money on the outcome of events. Elections, wars, rate decisions, resignations, Nobel prizes. The price of a contract (between 0 and 1) roughly reflects the probability the market assigns to that outcome. As the perceived likelihood rises, so does the price.
The Power of "Skin in the Game"
What makes this mechanism interesting isn’t the betting itself, but what economists call skin in the game. An opinion in a poll costs nothing, a bet costs something, and people who put their own money on the line tend to think differently, more carefully, more honestly (at least about their own assessment) than people who just tick a box.
Which is precisely why Polymarket called the last US election correctly while most pollsters didn’t, and that’s less a triumph of technology than a quiet but rather precise reminder that public opinion and actual expectation are two different things.
Democracies vs. Markets
Democracies vote. Markets bet. Both are legitimate, both have their weaknesses, but one of them lies less often, and it isn’t the one we were taught to trust in school.
Maybe the uncomfortable question isn’t whether prediction markets are better than polls, but why we so reflexively grant the word “people” only to those who have nothing to lose when they turn out to be wrong.