Suppose you’re on a game show, and you’re given the choice of three transparent doors: Behind one door you see a car; behind the other two doors are one goat each. You pick the car door, say No. 1, and the host, who knows what’s behind the doors, opens another door, say No. 3, which has a goat. He then says to you, “Do you want to pick door No. 2?” Assuming that you want the most valuable item, what should your response to host's question be?