Tim Urban

Tim Urban @waitbutwhy

You visit a town with exactly 1,000 families. Each family has exactly two children. On the street, your tour guide points to a passing man and boy and says, "That's Mr. Smith and his son." With only that information, what is the probability that Mr. Smith's other child is a boy? — PolitiTweet.org

Tim Urban @waitbutwhy

@Soul_Needed @chombiosko Two different problems, I agree — PolitiTweet.org