As the taxi came to a screeching halt at a traffic light,I asked the driver,"Do you agree that 'Time is money'?" "Well,it's a very common saying.Who will care so much about that?"the driver answered . "Look,the digits in the meter are still running when the car has stopped,"I pointed at the meter. "Oh.yes.You've got a point here,In this case,time is money for both of us,"added the driver.