infinity

Vsauce's Michael Stevens takes viewers past infinity using transfinite numbers, ordinals and cardinals, with input from mathematician Hugh Woodin. It is a fast-paced, mind-bending tour of different sizes of infinity.

John A. De Goes's Scalapeno keynote argues that Scala's popularity is declining because of compile times, complexity and compatibility problems. He proposes a path for Scala to survive, including a simplified functional subset.

Vsauce's roughly 24 minute explainer on the Banach-Tarski paradox, building from infinity and set theory to the decomposition of a sphere into pieces that form two spheres.