That by which something is accomplished or some end achieved
The first mechanism is the creation of things, an old and familiar approach.
And, after all, not even our knowledge of the mechanism of nature is a knowledge of reality.
But no one had any idea of the mechanism by which this could be achieved.
Final causes, vital and mental forces, the soul itself can, if they act at all, only act through the inexorable mechanism of natural laws.
Mechanism is that which obeys impulses from outside.