An entomologist was up for tenure at his university. But he had had nothing accepted for publication in several years. He knew this would be a problem. One day, depressed and working in his garden, he discovered his roses were dying. They were infested by an insect. He recognized the bug as one that infested animals, not plants. Excitedly, he took specimens to his lab, where he studied them. Soon, he had written an article. It was accepted for publication, and made a huge splash. The entomologist got tenure. All this, because he discovered a new lice on leaf.