Such a great video. Changing from sphere to cone in proving Monge's theorem makes the proof so much better, and way easier to visualize. I guess the proof hasn'

Such a great video. Changing from sphere to cone in proving Monge's theorem makes the proof so much better, and way easier to visualize. I guess the proof hasn't caught up in other places is because if the proof is in writing sphere could be visualized first or the sphere gives more aha feeling.