Productivity (n.) studies leave the dark zone of the work as dark as the old form-and-matter picture of making, while seeming practical.
Productivity (n.) is a number, and a number does not express a schema; very different designs give the same output.
Productivity (n.) blinds the production engineer: an aim outside the machines already governs his gaze, so he cannot become the wise one.
Productivity (n.) is the community's version of grace: an individual's effort has no worth until it is made effective by that outside blessing.
Productivity (n.) is the owner's way of seeing, and it alienates him too: the boss who owns the machines is as cut off from them as the worker, since he sees what they yield, never how they work.