Necesssity and mechanism

Necessity acts through mechanism: they rule, not any kind of teleology. Too bad that Europe heeded Aristotle, naturalist, who errs with proposing teleology as ruling and his own science held science back.
 Now  science has advanced by using mechanism^ to fathom matters.
 Randomness, necessity's manner of letting matters occur without planning how they affect other matters, and natural selection, the non-planning, anti-random [chance] agency of Nature, works as a sieve, no more than randomness planning outcomes.
   Tis superstitious to discern any teleology whatsoever! Any use of teleology here is use of superstition, so that polytheism and theism as full animism superstitiou.
     That superstition is just a  superfluity as the Aquinas- Shelley argument notes.
   How  then might one have a relationship with a   supercilious superfluous superstition?
     Might you expound on necessity, randomness and mechanism?
       ^ Mechanism  is the standard term. Paul B.Wesz instead uses the term causalism in  " The Sciene of Biology." And Ernst Mayr uses the t erm teleonomy, whence came the name the teleonomic argument.