TikTok, and other apps like it, are filled with financial advice. Some of it is reliable, some... less so. There are videos about running a business, having a side hustle, generating passive income. And also, there are a lot of tips and tricks, many of them questionable, about saving on your...

This episode originally ran in 2015. About one hundred years ago, a scientist and statistician named Francis Galston came upon an opportunity to test how well regular people were at answering a question. He was at a fair where lots of people were guessing the weight of an ox, so he decided to...