Athi is 18. He lives in Duncan Village, East London. Matric certificate still warm in his hand, he’s working the till at KFC in Hemingways Mall, taking home about R4 800 a month after UIF and transport. Every month he puts R500 – sometimes R300 when the month is tight – into a tax-free savings account. He chooses the Satrix MSCI World ETF because it’s cheap (0.35% fees) and gives him the whole world in one click. He’s not trying to get rich quick. He just doesn’t want to be b