
Learn your daughter's hair, one step at a time
Step-by-step hairstyles for dads. Ponytails, bunches and more, timed for a school morning. Free on the App Store and Google Play.
Pace needs two or more snapshots. This launch has 1, so velocity and momentum read as unmeasured rather than zero.
A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.