Obviously, the highest type of efficiency is that which can utilize existing material to the best advantage.
It's a question of evidence-based politics. If you know that something does not work, you should not keep doing it.
The Law of Triviality... briefly stated, it means that the time spent on any item of the agenda will be in inverse proportion to the sum involved.
True effectiveness is a function of two things: what is produced (the golden eggs) and the producing asset (the goose).
Law Number XV: The last 10 percent of performance generates one-third of the cost and two-thirds of the problems.