Gun control, abortion rights, drug legalization — it seems like every argument these days claims that if X happens, then Y will follow, and we’ll all be doomed to Z. Is the slippery-slope argument a valid logical construction or just a game of feelingsball?

Sure, markets work well in general. But for some transactions — like school admissions and organ transplants — money alone can’t solve the problem. That’s when you need a market-design wizard like Al Roth. Plus: We hear from a listener who, inspired by this episode, made a remarkable decision.