The numbers kept rising. After 50 meters it was more than half a second, and after 100 meters it was 1.28 seconds, and after 150 meters it was 2.52 seconds, and after 200 meters it was 3.34 seconds, and after 250 meters it was 4.91 seconds, and after 300 meters it was 5.25 seconds, and at that point, when the Iron Lady led the Rio Games’ women’s 400-meter individual medley like …