Valid. However, I wonder if we don't need a system to measure if our planned actions are helping or not.
It seems to be that the idea of measuring, using a Key in the direction of a Projected Expectation is to change the Key, to reflect about the validity of the Key.
I am not in favor of Output or Outcome yet - but I am allowing room for a deeper reflection here - so that we can go back to abstract the essence of what is going on with the art and science of trying to measure/evaluate/learn our efforts towards objectives.
This approach resonates with my way of communicating - always presenting some data points hoping that the reader would join me in conclusion.
The following talk from Michael Dearing is an excellent resource about the topic with interesting examples of how people naturally writes:
MICHAEL DEARING Executive Communication w/ Harrison Metal
https://www.heavybit.com/library/video/executive-communication/