The good man out of the good treasure of his heart brings forth what is good; and the evil man out of the evil treasure brings forth what is evil; for his mouth speaks from that which fills his heart. (Luke 6:45 NASB)
My dad, a computer geek back from the early transistor days, loved the adage, “Garbage In, Garbage Out!” Now it’s a cliche, but he used it when it was still new, working on guided missiles in the late sixties and early seventies. Weapons he worked on are still in use today, back when we made them right! There was a lot of good “garbage” going in in his day.