Tyler Durden: [to the police chief] Hi. You're going to call off your rigorous investigation. You're going to publicly state that there is no underground group. Or... these guys are going to take your balls. They're going to send one to the New York Times, one to the LA Times press-release style. Look, the people you are after are the people you depend on. We cook your meals, we haul your trash, we connect your calls, we drive your ambulances. We guard you while you sleep. Do not... fuck with us.

FPGA field programmable gate arrays

Well duh! We need that kind of compute power to keep track of the debt.

It's human nature to see things in the shadows - the logic is hardwired into our brains. Exposure to popular culture makes the shadows look like aliens. No need to look for a radiation-based cause.