There is the joke about the efficiency expert who concluded his lecture to a group of business leaders with a note of caution: “You need to be careful about trying these techniques out at home.”
“Why?” asked a man in the audience.
“Well,” the expert explained, “I watched my wife’s routine at dinner for years. She made lots of trips between the refrigerator, stove, table, and cabinets, often carrying a single item at a time. One day I told her, ‘You’re wasting too much time. Why don’t you try carrying several things at once?”