Back when I was working my way through college, I was a cottage parent at a facility for the severely and profoundly retarded. Joe was this man of about 30, who had been institutionalized since he was a young boy. On Wednesdays, we had an ice cream vendor who came to our cottage, and sold the residents ice cream at half price. Some of the residents had family who would give them some coinage to buy ice cream, but Joe had no family and thus, no coinage. When I would come in on Wednesday, I would ask Joe... "You gettin' some ice cream today, Joe?" ...and he would look at me with this very sad expression, and pull his empty pockets out of his pants and shrug. Here's the economics lesson pinheads.... Even Joe, a 30-year-old severely retarded individual, understood, you can't spend what you don't have. Of course, I would always give Joe some money so he could buy ice cream, but he never asked me for it. When he was asked the direct question, he knew and understood, no money=no ice cream.