In the 2010 Olympics, both the men’s and women’s two-man bobsled gold medals were decided by less than two-tenths of a second. Each team had taken four runs down a 1,450 meter (almost 1 mile) track, and the combined times were separated by less time than it takes to blink. So in a sport won by speed, what does it take to have the perfect slide on a bobsled run?