Jake Green isn't just Jake Green. Jake represents all of us. The colour green is the central column of the spectrum and the name Jake has all sorts of numerical values. All things come back to him within the film's world of cons and games. ↗
Labour was the first price, the original purchase - money that was paid for all things. It was not by gold or by silver, but by labour, that all wealth of the world was originally purchased. ↗