I find it very scary that huge portions of our economy are basically houses of cards built upon more houses of cards. We're so desperate to generate circulation for money that we've invented an intricate set of rules where it's OK to pretend that you have money, as long as you promise to actually have it at some point in the future. And then of course another set of rules has to be invented to manage the risk of that…
It makes the point that it's necessary because the government wants to control people's subconscious behavior through consumerism, which necessitates (I guess?) this skew in currency that you pointed out.