Who cares if the Dow hit 20K? Not most of us 

On the floor of the New York Stock Exchange, at the offices of investment brokers, and in corporate boardrooms throughout the country, there were hearty celebrations on Wednesday morning as an artificial number hit an arbitrary target. People doffed cheap embroidered hats. They poured Champagne. Frivolity was the order of the day. But for the rest of us, the Dow hitting 20,000 doesn’t mean a damn thing.