The computer is just the latest in a line of technological innovations and revolutions that have changed our language. Obviously the new technology demands a specialized vocabulary for the engineers themselves. But certain words—“glitch,” “interface,” and “to program” are ones that come to mind—are sure to be incorporated into everyday language by people who can’t tell a microchip from a cow chip. The ages of herding and agriculture gave us “bellwether,” “a long row to hoe,” and scores of metaphors derived from sowing and reaping. The ages of steam and machinery put us “in gear” and fashioned “safety valves” for everything from urban riots to executive headaches. Radio, aviation, telegraphy, astronomy, chemistry, electricity, and photography have all made their mark.