William M. Lee, Junior Achievement
“ It was beautifully made, and had a sort of professional look about it."It flies too well," Mary told Doris. "A kite ought to get caught in a tree sometimes.""You're right," Doris agreed. "Let's see it." She gave the wire at the small end the slightest of twists. "There, it ought to swoop."Sure enough, in the moderate breeze of that morning, the kite swooped and yawed to Mary's entire satisfaction. As we trailed back to the barn I asked Doris, "How did you know that flattening the lower edge of the hole would create instability?" She looked doubtful. ”
