"This story begins with a group of people who are expert at looking: the professional searchers known as radiologists."

"'If you watch radiologists do what they do, [you're] absolutely convinced that they are like super human,' says Trafton Drew, an attention researcher at Harvard Medical School."

"About three years ago Drew started visiting the dark cave-like "reading rooms" where radiologists do their work. For hours he would stand watching them, in awe that they could so easily see in the images before them things that to Drew were simply invisible."