Small

When things get so big, I don't trust them at all
You want some control, you've got to keep it small
-- Peter Gabriel, D.I.Y, from "Peter Gabriel II", 1978

Door

"My only advice is, if you can get me to offer you $5,000 not to open the door, take the money and go home."
-- Monty Hall, quoted in the New York times, 21 July 1991.