It was the team finals of women's gymnastics in the 2012 Olympics, and McKayla Maroney was on top of her game. The 16-year-old US gymnast was performing arguably the best vault of all time, launching herself unimaginably high into the air and sticking a flawless landing. When her score came, many were baffled: 16.233. Three-tenths of a point stood between her and a perfect score. If that vault wasn't perfection, what was?