My guest today is Grant Sanderson, the man behind one of the world's largest math-focused YouTube channels: 3blue1brown. We talk about ideas like prime numbers, the Twin Primes conjecture, and pop culture's role in advancing mathematics. Later in the episode, we talk about mathematical constants and the rate of progress in mathematics. Then, we close by talking about Grant's process for writing scripts, note-taking, and researching ideas for each episode.