I know it's an outlandish presumption on my part, essentially inferring that I have "grey cells" to keep or take care of, and it's truly an archaic expression anyways, but some ignoramuses about town used to believe that alcohol kills the brain cells responsible for intelligence... the "grey cells" as opposed to the white brain matter which largely handles the football maneuvers. Basketball players are reputed to have actual intelligence as well as athletic skills.
pot, on the other hand, may not kill grey cells but inhibit the formation of interneuronal connections between grey cells, which are necessary for complex reasoning, maturity, and responsible behavior.
it all flies against common sense, all this science crap, because everyone knows that pickling biological material preserves the tissues.