Imitation of unknown beast number logic #1

"It is better to imitate ancient than modern work." - Leonardo Da Vinci

Imitation of unknown beast number logic #1:

Three sections:

1) The unwanted or bad matter or material ... etc

2) The necessity case (reason)

3) The manipulation and middle state

In this logic we face a situation for example that has a necessity to handle with bad thing against our principle, so we solve this situation by taking just the amount that the necessity needs of the unwanted material. We with that made a middle state that dealt between step 1 and 2, for necessity we seemed breaking step 1 but with measuring the need of the necessity we made the principle of step one that we still admit that this bad material is bad.

Example:

Leonardo lost in desert and he was thirsty and close to die, he meet impure dirty water, he drank just the amount that saves his life.