How do you know you exist? – James Zucker
View full lesson: http://ed.ted.com/lessons/how-do-you-know-you-exist-james-zucker
How do you know you’re real? Is existence all just a big dream? Has some mad scientist duped us into simply believing that we exist? James Zucker investigates all of these questions (and more) in this mind-boggling tribute to René Descartes’s “Meditations on First Philosophy.”
Lesson by James Zucker, animation by Stretch Films, Inc.



![[ID: lZpMXJ4TvaM] Youtube Automatic](https://myaiu.tv/wp-content/uploads/2026/06/id-lzpmxj4tvam-youtube-automatic-236x133.jpg)
![[ID: K80bqj6quJo] Youtube Automatic](https://myaiu.tv/wp-content/uploads/2026/06/id-k80bqj6qujo-youtube-automatic-236x133.jpg)
![[ID: pWDClKzlbAU] Youtube Automatic](https://myaiu.tv/wp-content/uploads/2026/06/id-pwdclkzlbau-youtube-automatic-236x133.jpg)
![[ID: lKUdNAGn9_E] Youtube Automatic](https://myaiu.tv/wp-content/uploads/2026/06/id-lkudnagn9e-youtube-automatic-236x133.jpg)
![Private: [ID: k7zdqnhY8b0] Youtube Automatic](https://myaiu.tv/wp-content/uploads/2026/06/private-id-k7zdqnhy8b0-youtube-a-236x133.jpg)
![Private: [ID: CY1CeFAYAok] Youtube Automatic](https://myaiu.tv/wp-content/uploads/2026/06/private-id-cy1cefayaok-youtube-a-236x133.jpg)