Design

Every act of will is an act of self-limitation…
Art is limitation; the essence of every picture is the frame.
(Chesterton, Orthodoxy)

The ideal must be preserved through all iteration.
(Chesterton, Orthodoxy)

Systems engineering, Blanchard and fabrycky
For progress by its very name indicates a direction; and the moment we are in the least doubtful about the direction, we become in the same degree doubtful about the progress.
G. K. (Gilbert Keith) Chesterton • Heretics
he is a poet in this real sense, that he has realised the meaning of every function he has performed.
G. K. Chesterton • The G. K. Chesterton Collection [50 Books]

It is obvious, of course, that a permanent ideal is absolutely necessary to anything like progress or reform. You cannot reform what is eternally formless; and you cannot march towards what is always moving about.
G. K. Chesterton • The G. K. Chesterton Collection [50 Books]

Evolution vs Progress vs Reform
(Chesterton, Orthodoxy)

If you read the book "Noise" from Kahneman et al. you will see that noise of decision (e.g. over different persons) can be reduced by skipping the weights and just adding up the scores -- Equal Weighting Model