Robinhood says it wants to be everything to investors—but its fastest-growing attractions look a lot like a casino. Don and Tom examine prediction markets, options, crypto, payment for order flow, and the uneasy fit between fiduciary advice and a brightly lit door to speculation. They explain why gamification and enormous transfer bonuses can be especially dangerous for inexperienced investors. If the goal is long-term wealth rather than entertainment, a boring, diversified custodian still b...