Paul and Mary sat in the yellow Adirondack chairs on her front porch, a plate of peanut butter cookies and two glasses of lemonade sitting untouched on the table between them. Condensation from the glasses formed small pools and ran between the tiles of the table’s mosaic top. Both started out at the street where neighborhood kids ran through sprinklers or whizzed by on skateboards as if they could find answers in the chalk marks on the pavement. Faces scrunched in concentration, they were trying t...