How vast is infinity? - Dennis Wildfogel

View full lesson: http://ed.ted.com/lessons/how-big-is-infinity Using the fundamentals of set theory, explore the mind-bending concept of the "infinity of infinities" -- and how it led mathematicians to conclude that math itself contains unanswerable questions. Lesson by Dennis Wildfogel, animation by Augenblick Studios. Learn more about your ad choices. Visit megaphone.fm/adchoices