What if you went back in time and killed your own grandfather? Would you still be born? Or would you have thus killed yourself? Thanks to Google #sciencegoals for sponsoring this video!
Link to the previous MinutePhysics video: https://youtu.be/XayNKY944lY
If you could travel back in time, and you killed your grandfather, would you be killing your future self? What do physics, complexity theory, and computer science have to say about this famous murderous time-travel paradox?
Scott Aaronson Notes that discuss time travel and computation, computational complexity, closed timelike curves, and the grandfather paradox: http://www.scottaaronson.com/democritus/lec19.html
Technical paper that discusses the same thing: http://arxiv.org/abs/quant-ph/0502072
Thanks to everyone who supports MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon supporters here: http://www.minutephysics.com/supporters.html
Music by Nathaniel Schroeder, http://www.soundcloud.com/drschroeder
MinutePhysics is on Google+ - http://bit.ly/qzEwc6
And facebook - http://facebook.com/minutephysics
And twitter - @minutephysics
Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Created by Henry Reich
Tagged under: physics,minutephysics,science
Find more lesson plans like this:Acid-Base Buffers: Calculating the pH of a Buffered Solution
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip
Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans
1. Students enter a simple code
2. You play the video
3. The students comment
4. You review and reflect
* Whiteboard required for teacher-paced activities
With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.
Carry out a quickfire formative assessment to see what the whole class is thinking
Create interactive presentations to spark creativity in class
Student teams can create and share collaborative presentations from linked devices
Turn any public video into a live chat with questions and quizzes