"An economy is a closed system - if some are saving, others have to spend to keep the music going." You mean they have to spend more than they can afford? Othe

"An economy is a closed system - if some are saving, others have to spend to keep the music going." You mean they have to spend more than they can afford? Otherwise, what exactly do you mean by they have to spend? Obviously they have to buy a house, a car, a phone, a computer, electricity, etc. I would think most people save what is left over if you like.