A good book can change the way we see the world, but a great book actually becomes part of our daily consciousness, permeating our thinking so much that we take it for granted and forget how provocative and challenging its ideas once were and still are. "The Structure of Scientific Revolutions" is such a book. When it was first published in 1962, it was a milestone in the history and philosophy of science. Fifty years later, it still has many lessons to teach. With "The Structure of Scientific Revolutions," Kuhn questioned long-standing linear notions of scientific progress and argued that transformative ideas do not arise from the everyday, incremental process of experiments and data collection, but that revolutions in science—those groundbreaking moments that disrupt accepted thinking and offer unexpected ideas—occur outside of normal science.