For nearly a century, the concept of "infinite sets" has rested at the foundations of modern mathematics. I have a tough time grasping this concept, so I asked Dr. Daniel Isaacson of Oxford University to help me out. We cover two definitions for infinity, discuss the metaphysics of mathematics, and cover some basic "intuitionist" concepts. Get full access to Steve Patterson's Substack at stevepatterson.substack.com/subscribe