Betting on PredictIt has been a side-hobby of mine for the last 5 years, in which time I turned my fun $10 deposit into (just) over $1000. For me, it's a satisfying way of interacting with the news, motivating clear-headedness and accuracy over simplicity and filter bubbles.<p>The talk about "rational markets" in this thread is well-meaning, but I think it could better targeted toward BetFair and other uncapped foreign markets. PredictIt has a cap of $850 from any individual in any market, which means almost no market is dominated by "sharps" exploiting differences between prices and reality. Sure, PredictIt's prices are often more accurate than the average person's guess, but they still exhibit a lot of small and predictable biases:<p>- "Yes" positions are more popular<p>- Pro-Republican positions are more popular<p>- Cheap, improbable positions are more popular<p>- Positions confirming simple ideas are more popular<p>- Positions traders wish were true are more popular<p>- Things being discussed on the news are treated as more contentious than they are<p>Ultimately, almost all of my 100x growth just boiled down to finding these biases and maximizing my expected log(return) with them in mind.<p>I do believe PredictIt was good for discourse. Though it may have ultimately affected a small number of views, the "put-up-or-shut-up" mentality is much closer to the scientific method than media and its tendency to navel-gaze. The domain of PredictIt markets was small, but I often imagine a world which creates this kind of ecosystem for a broader array of scientific fields.<p>For me, though, this is the end of the line. The 2020 races (with Georgia runoffs) risk being unresolved by the 2/15 deadline, and it's impossible to predict what PredictIt will do then, much less if markets will properly price that in. It's been a fun run, and I'm glad it lasted as long as it did.