One of the assumptions people make about radiation is that if twice as much radiation is twice as bad then half as much is still half as bad. Folks, we evolved in an environment which is awash in the radiation output of a fusion reactor. Our bodies are full of biochemical safeguards against radiation damage. We've had people working in front of computer monitors for a quarter-century, and it's hard to tell if they're dying sooner. And cancer is the big killer because we can deal with so many of the others, particularly infection and injury. We're rolling the dice more often than ever before, but we can still only lose once. I CAN LEND YOU A VERY FAST HORSE