A parent-child combo might pop up at the crest of the old country road, wan and wary, and Mark Spitz shrank from these, no matter how well outfitted they were. Parenthood made grown-ups unpredictable. They hesitated at the key moment out of consideration for their kid’s abilities or safety, they were paranoid he wanted to rape or eat their offspring, they slowed him down with their baby steps or kept him distracted as he pondered their erraticism.
