Polymarket's new Combos feature lets you bundle multiple bets into one payout, but the same math that makes sportsbook parlays a bad bet applies here too, and it compounds with every leg you add. Here's the mechanism, and the test to run before you build one.

If you keep losing on Polymarket, the cause is almost never bad predictions. It's one of six repairable leaks, and all six are visible in your own trade history. A self-diagnostic.

The central discipline of prediction markets is not finding action. It is refusing action until the risk is survivable.