Support Closer To Truth with a donation of any amount to help us continue exploring the world's deepest questions.   The nature of scientific Breakthroughs is one approach; the process of scientific Breakthroughs is quite another. When physicists reflect on how they do physics, when physicists review the history of physics, what are the ways in which Breakthroughs occur?   Featuring interviews with Robbert Dijkgraaf, Gregory Chaitin, Edward Witten, and Karen Uhlenbeck.   Register for free for subscriber-only exclusives.