Mockers respond to wisdom with mockery. The wicked respond to righteousness with wickedness. "Garbage in, garbage out" isn't always true. With people, the machinery in the middle is much more significant than what goes into it.

Consider Mark 15:11. Whatever you might accidentally ingest by eating with unwashed hands won't harm you spiritually, but no matter what goes into you, no matter how good or bad, if your heart is defiled, it will only produce more defilement.
#proverbs 9:7