Comment by mattas

This is what makes measuring productivity so hard. Let's say you're a worker that is responsible for updating a status of an order with a bunch of metadata.

One day, 100 orders come in for you to update. The next day, you get 50 orders to update. Did your productivity just get cut in half? If you get 200 orders on the third day, did you just quadruple your productivity from the previous day?