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Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonateUploaded 02-02-15I feel like I've seen this video before…Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoeFollow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe Most of us have felt it before, that strange sensation that you've been somewhere or seen something before, as if you already remembered what's happening. Are you psychic? Nope, that's just déjà vu. Why does déjà vu happen? Well, scientists aren't completely sure, but they've got a few good theories about it. Great déjà vu explainer from Jordan Gaines Lewis: http://www.gainesonbrains.com/2012/02/seeing-into-future-neuroscience-of-deja.html Some theories of why déjà vu happens: http://theconversation.com/explainer-what-is-deja-vu-and-why-does-it-happen-11355 And now for something completely different: https://www.youtube.com/watch?v=G2eUopy9sd8 Special thanks to Austin's Corona Cafe! Cast:Waiter - Joe Nicolosi (he's also the director)Sneezing girl - Kate Eads (she's also associate producer) Guy spilling coffee - John Knudesn (he's also gaffer)Have an idea for an episode or an amazing science question you want answered? Leave a comment below!-----------------It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.DFollow me on Twitter: @jtotheizzoeEmail me: itsokaytobesmart AT gmail DOT comFacebook: http://www.facebook.com/itsokaytobesmartGoogle+ https://plus.google.com/+itsokaytobesmart For more awesome science, check out: http://www.itsokaytobesmart.comProduced for PBS Digital Studios Joe Hanson - Creator/Host/WriterJoe Nicolosi - DirectorAmanda Fox - Producer, Spotzen IncKate Eads - Associate ProducerAndrew Matthews - Editing/Motion GraphicsKatie Graham - Director of PhotographyJohn Knudsen - GafferDalton Allen - Post-Production InternTheme music:"Ouroboros" by Kevin MacLeodOther music via APM Stock images from Shutterstock-----------------Last week's video: 5 Weird Involuntary Behaviors Explained: http://www.youtube.com/watch?v=ZE8sRMZ5BCA More videos:Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA Why Did We Blow on NES Games? https://www.youtube.com/watch?v=4Gf9mtXnJfMThe Science of Game of Thrones - https://www.youtube.com/watch?v=Utu-LpJn3Is There Was No First Human - https://www.youtube.com/watch?v=xdWLhXi24Mo How The Elements Got Their Names - https://www.youtube.com/watch?v=mtg9p6A6xnY Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices
