Home Is Where the Start Is It was Mother's Day. So the teacher of the Parents' Sunday School Class thought he would liven things up by bringing in a special prop -- a 40 foot long I-beam -- which he laid on the floor. As the class began, the teacher asked a young mother, "If I gave you $20, would you walk across that I-beam?" Without hesitation the mother replied, "Sure." "Suppose the beam was suspended between two buildings, 50 stories in the air,"