The next part of this 3-part epic is about hourly rates of pay.
I think we will need a fourth one on productivity... "Dieu se rit des hommes qui se plaignent des conséquences alors qu'ils en chérissent les causes" Jacques-Bénigne Bossuet
Yet more quicksands involving incompatible data, untold complications, and uncertain indicators...
I hope all this is worth a bunch of years off Purgatory.