Around 45, 000 Verizon employees from two labor unions who were on strike for most of August were counted as a subtractions from the total jobs number.
Secondly, the additional activity can be identified only by a process of averaging the results of subtractions after the stimulus has been given repeatedly: variations in the response to successive stimuli are ironed out.
Here's a team-by-team glance of notable players who have either arrived or departed from NFL teams through noon Saturday, knowing full well there will be many more additions and subtractions in the coming weeks.