<p>Birthdays! Why do Americans prefer Thanksgiving and the Fourth of July to theirs? Why do they make Stephen think of molasses and chicken feed? And is “Happy Birthday” the worst song ever written?</p>

136. Is Sloth a Sin or a Virtue?

Research psychologist Angela Duckworth (author of "Grit") and tech and sports executive Mike Maughan really like to ask people questions, and they believe there’s no such thing as a stupid one. So they have a podcast where they can ask each other as many “stupid questions” as they want. New episodes each week. "No Stupid Questions" is a production of the Freakonomics Radio Network.

To get every show in the Freakonomics Radio Network without ads and a monthly bonus episode of Freakonomics Radio, start a free trial for SiriusXM Podcasts+ on Apple Podcasts or by visiting siriusxm.com/podcastsplus.