I had a guy in college who wanted me to write a program to generate lottory picks for him, but he wanted me to make it get rid of the "obvious things that won't come up", such as "1, 2, 3, 4, 5". I told him that was silly, as 1, 2, 3, 4, 5 had the same probability as any other numbers. He just wouldn't listen to me. Finally I took his criteria and wrote him a program that generated the numbers, completely ignorning his "rules". I figured if 1, 2, 3, 4, 5 ever came out I could fix the program then.