Educational Play-Money Prediction Markets

This is neat. Haskell must be a great language to write in for this sort of thing! Prediction markets are so curious. I ought to read through the source of this project sometime to understand them better, and I especially need to understand the legal side of the big ones like Polymarket or Kalshi. I guess it’s all a hyper-optimized & real-time market of futures contracts? It’d be interesting to see how their implementation differs from a play-money implementation, and how the legality of it all influences the software …