When John Knoll took a photo of his topless girlfriend on a secluded beach in 1987, he didnt expect the picture to be pored over and manipulated by thousands of people. But Johns brother Thomas was working on the software that became Photoshop, and Jennifer in Paradise, as the picture came to be known, was the perfect candidate for the programs first color test image. As The Guardian explains in its consideration of the photos importance, John and Thomas often used the picture of Jennifer — once Johns girlfriend, now wife — to perform demonstrations of their software.