"It helps a lot for when I'm working at incredibly high speeds, or when in space and working with incredibly high speeds and incredibly far distances. Also on super-speed chases, if we happen to ever have one of those, because I can just go 'match velocity of that thing' constantly and keep up. It does require me to actively match it constantly if they change directions, mind, because I do not just have a 'match this person's future changes' setting, but when a person can be a mile away in three seconds..." She shrugs. "It matters."