Watch "The Two Envelope Problem - a Mystifying Probability Paradox" on YouTube
https://youtu.be/_NGPncypY68
Watch "The Coolest Radio You've Probably Never Heard Of" on YouTube
https://youtu.be/h4x7cGALaC8
Watch "How to Draw Tangent Circles using Cones" on YouTube
https://youtu.be/CaeOpLijCkI