How much cash do you have on you at this very moment? Cash transactions are on the decline. In fact, by 2017, only 30% of consumer transactions in the U.S. were done with actual currency. At first glance this seems harmless. But what would a cashless world look like? Sure, transactions would be convenient...but a cashless system could leave us vulnerable to hackers, natural disasters, and, perhaps most terrifyingly, economists. Before we rush headlong into a cashless world, let's pause to analyz