afternoon of March 24, 2006, an employee at a moving truck rental company in Ohio opened his desk drawer and grabbed a wad of cash. It had been a slow day, so the employee was using his downtime to organize a few recent payments. The money he’d just grabbed was from an all-cash deal that had happened a few days ago. At the time, the employee had been super busy, so he’d just taken the cash from the customer, flipped through it quickly to make sure the amount seemed right, then shoved the money in the drawer to deal with later. Now, he was actually counting it properly – and he really hoped the customer hadn’t shorted him, or he’d have to track them down to collect. But as the employee counted the bills, he paused. Not because the amount wasn’t right – but because there was something on the money that caught his attention. For a second, he wasn’t sure what it was. So, he looked closer. And then, all at once, he understood what he was seeing. He stopped counting the money and started flipping through it as quickly as he could – and he kept seeing the same thing on almost all the bills. With his heart racing, the employee dropped the money