Random product idea: An app where people can place bets on outcomes in their own personal lives by assigning percentage certainty. And where the app will let t

Random product idea: An app where people can place bets on outcomes in their own personal lives by assigning percentage certainty. And where the app will let them make bets on future public events the same way, events that are fed via a service and where the bets are stored centrally. The bets wouldn't be for money, they'd instead be for the credibility of who could be most "well-calibrated" via a "proper scoring rule" that would penalize you for inaccuracy or ignorance - so you have incentive to be knowledgeable about the event, and accurate about the odds. Soon you'd have a leaderboard of people who were best able to tell the future, and you could design future features from there. But the MVP is pretty simple. Create an event, create a bet, create a leaderboard.