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Try Audible: http://www.audible.com/spacetime Causality is meant to move in one direction: forward. But the Quantum Eraser experiment seems to reverse causality. How and why can this happen and what are the implications of this experiment on how we understand Quantum Mechanics and our greater universe? Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g A Delayed Choice Quantum Eraser Kim, Yu, Kulik, Shih & Scully, 2000, Physical Review Letters v.84 p.1 http://arxiv.org/abs/quant-ph/9903047v1 Previous Episode on Can We Survive the Destruction of the Earth? ft. Neal Stephenson https://www.youtube.com/watch?v=UjmlwdUK4RE Previous Episode on The Quantum Experiment that Broke Reality https://www.youtube.com/watch?v=p-MNSLsjjdo Gamma Ray Bursts by In a Nutshell https://www.youtube.com/watch?v=RLykC1VN7NY Episode written and hosted by Matt O’Dowd Made by Kornhaber Brown (www.kornhaberbrown.com) Comments answered by Matt MirceaKitsune https://www.youtube.com/watch?v=UjmlwdUK4RE&lc=z12vfjjhemf1sxi5104cir5g2kisylrwdqw0k tsjoencinema https://www.youtube.com/watch?v=UjmlwdUK4RE&lc=z13axr1zmzygftjf522mwjaq5tyruty1p Weapon Valhalla https://www.youtube.com/watch?v=UjmlwdUK4RE&lc=z133h3whrzi4sfqne23htd3hymjoylkyj04 Narigone https://www.youtube.com/watch?v=UjmlwdUK4RE&lc=z12bftwgfk3wwp4ia04cc3ar2xiuvpvhnqw0k TimmacTR https://www.youtube.com/watch?v=UjmlwdUK4RE&lc=z12nhp5qypb2ytnhq04cj11xwnn2ihyieag kaleb tandberg https://www.youtube.com/watch?v=UjmlwdUK4RE&lc=z122tp3ycsv4u3kd023tyz4wfsyzzzdvn The deathless face of the unborn mind https://www.youtube.com/watch?v=UjmlwdUK4RE&lc=z12ptr35szykzf4gu04cjp3z0lmchvwwzrw0k Error 404: Hodor Not Found https://www.youtube.com/watch?v=UjmlwdUK4RE&lc=z12gefxxuufihh43t23pezs5ryalxjhbp04