The obvious one, in a market system, in a really functioning one, whoever's making the decisions doesn't pay attention to what are called externalities, effects on others. I sell you a car, if our eyes are open we'll make a good deal for ourselves but we're not asking how it's going to affect her [over there.] It will, there'll be more congestion, gas prices will go up, there will be environmental effects and that multiplies over the whole population. Well, that's very serious.
