The writer Drew Duke recalled from her childhood her second grade Valentine's Day party. Several days earlier a big decorated box had been placed at the front of the room by the teacher. It had a slit in the top. Each student had been invited to bring valentines addressed to friends and to drop them into the box. Then on Valentine's Day, one student was designated by the teacher as the postman to distribute the cards. Earlier that week Drew's mother had bought a package of 35 valentine cards. Drew asked her, "Why did you buy so many?" She replied, "So you can give one to each person in your class." "No ma'am," Drew said, "We don't do it that…