One of the coolest things I learned from elementary school was taught just outside the classroom. In the early 1960s, marbles on the playground were phasing out of popularity. However, I managed to catch the tail end of the action on what was an incredible macrocosm of social and financial principles. Long before “economic inequality” was touted as an evil of society, marble players had their own version of “wealth disparity” with those who owned the lions share of bumblebees, steelies and cat's eyes. Marbles were a free and open system with disputes settled in a mostly peaceful manner. A good player never had to buy marbles, he won or earned them. The holdings of marble magnates tended to grow, while the less diligent and proficient players needed to tap into their allowances to keep in the game. If my memory serves me right, I was mostly marble middle class.