We do not pay for service years (except for a limited number of offices), but for the result. You can’t predict and guarantee the outcome – you’re not ready to be the first in this matter.

In many industries, the result cannot be felt or taken into account in quantitative terms, from this work does not become necessary.

Classics of genre
Speak the jump.
What is?
No, the boy must know what to jump.
So you find first the unit of measurement of my labor, and then ask what and the jump.

(from the monologues of Arkady Rykin)