Is there a single word meaning 'separate wheat from chaff'?
The closest I've found is 'winnow' but it doesn't really capture the sentiment.
I'm looking for a word to help describe a person, an educator, who [distills and clarifies] the most valuable core ideas.
"I've taken the methods presently in use, analyzed them, and am reframing the core wisdom. I've __________ the material."
(Does it seem odd such a word would not be common? Is it because separate, and its synonyms, already imply the reason for division is always about good and bad?)
... CLARIFICATION (10/22/18) ...
The answers given have helped me clarify what I'm after, which is, a word meaning to 'extend and unify' the current canon of theories.
For example, Quantum Mechanics is NOT a distillation of Relativistic Mechanics (Einstein) which was not a distillation of Newtonian Mechanics.
Each subsequent theory was a new, UNIFYING, theory which still accommodated the previous theories.
So that evolution isn't distilling, culling, refining, purifying, etc. but synthesize, but not amalgamate, certainly seems in the right ballpark.