Johnny saves his earning and continue to recycle his cash flow until he has accumulated enough money to pay for his own school fees this year. And as I understand, he is still in business to raise money for his school fee next year.
For example, in the case of a year ended forecast for growth of real GDP four quarters ahead, experience over the past couple of decades is that the probability of a point forecast being accurate to within half a percentage point is about one in five. For year average forecasts the accuracy is better, but still the margins for error are non trivial.