ABSTRACT

When a major-league out elder runs down a long y ball, the tracking of a moving object looks easy. Over a distance of a few hundred feet, the elder calculates the ball’s trajectory to within an inch or two and times its fall to within milliseconds. But what if an out elder was asked to track 100 y balls at once? Even 100 elders trying to track 100 balls simultaneously would likely nd the task an impossible challenge.