premise: I soaked in every second of the three hours the fans were permitted to walk on the field . I ' m not quite sure what came over me . But whenever I saw a mother or father taking pictures of their kids , or a wife snapping a photo of her husband , I offered to take the photo of them all together . I gave some people a little history lesson on significant events that happened in various parts of the outfield . What were the history lessons about ?
hypothesis: fans being permitted to walk on the field