You get what you’re optimizing for. Deming has already said, “Every system is perfectly designed to get the results it gets.” If we build a work system in which it is important that everyone is working at 100% capacity, then we will get exactly such a system. And now the important point: This does NOT mean that work is finished quickly!
If we want work systems in which work is finished quickly, we must – surprise, surprise – finish work. Therefore, the work in the system must be limited so that the focus shifts from starting to finishing. And now comes the disappointment for full utilization fetishists: That is not possible with 100% utilization!
When we make plans with 100% utilization we have to be aware that work is getting done slowly and that we will not meet deadlines.