He's going to choose a volunteer, and he wants each kid to have the same chance of getting chosen. Fair enough. Now we have three methods by which he can do it, and let's just think about whether each of these methods are fair, where each kid does have the same chance of getting chosen, and if they're not, if they don't lead to each kid having the same chance of getting chosen, think about why that is the case. So method one, the magician starts with the birthday boy and moves clockwise, passing out 100 pieces of paper numbered one through 100. He cycles around the circle until all the pieces are distributed. He then uses a random number generator to pick an integer one through 100 and chooses the volunteer with that number. So let's just think about what's happening.