Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: How do you defeat a creature that grows two heads for every one head you chop off? You do the math. Thanks to The Great Courses Plus for sponsoring this episode of Infinite Series. Try a 30 day trial of The Great Course Plus at Tweet at us! @pbsinfinite Facebook: series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode - Singularities Explained Previous Episode - A Hierarchy of Infinities Mathematician Kelsey Houston-Edwards explains how to defeat a seemingly undefeatable monster using a rather unexpected mathematical proof. In this episode you’ll see mathematician vs monster, thought vs ferocity, cardinal vs ordinal. You won’t want to miss it. Written and Hosted by Kelsey Houston-Edwards Produced by Rusty Ward Graphics by Ray Lux Made by Kornhaber Brown ( ) Comments answered by Kelsey: Lucid Moses Lorenz Zahn QED Rubbergnome