Do real estate agents really have their clients’ best interests in mind? That’s the question best-selling authors Steven Levitt and Stephen Dubner, of “Freakonomics,” ask in the film version of their book, above, and the answer, via Curbed, is probably not. Agents’ own financial best interests lie in selling as many homes as possible rather than in selling each at the best possible price, Levitt and Dubner say. There’s further evidence of that in data that shows that agents leave their own homes on the market for an average of 10 days longer than they do when it comes to the homes of their clients. Watch the clip for more explanation.