
Summary
The discussion centers on the philosophical implications of quantum mechanics, particularly the concept of realism versus observer-dependent interpretations of reality. It explores the idea that the universe may exist in a state of fundamental indeterminacy, where physical properties emerge from observation rather than existing independently. This leads to a debate among physicists and philosophers about whether reality is subjective or has a concrete existence.
The conversation delves into the EPR paradox, proposed by Einstein and colleagues, which challenges the notion of non-realist interpretations of quantum mechanics. It discusses the implications of quantum entanglement and the Bell theorem, which tests the validity of local realism. The episode also introduces the concept of superdeterminism, suggesting that the universe evolves in a uniquely predictable manner, potentially undermining the notion of free will and independent observation.
Recent experiments, including cosmic Bell tests, are highlighted as efforts to address these complex questions. These tests aim to determine whether local realist influences can account for observed correlations in quantum measurements. The ongoing debate among scientists about the interpretations of these results reflects the broader philosophical questions surrounding determinism, free will, and the nature of reality itself.
Show Notes
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE
Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime
Today we’re going to try to save reality - or at least realism. However this rescue effort has a price; one that you may not be willing to pay. Your very soul, or at least your free will, is on the line.
Check out the Space Time Merch Store https://www.pbsspacetime.com/shop
Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/spacetime
Search the Entire Space Time Library Here: https://search.pbsspacetime.com/
Hosted by Matt O'Dowd Written by Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal & Stephanie Faria Directed by Andrew Kornhaber Associate Producer: Bahar Gholipour Executive Producers: Eric Brown & Andrew Kornhaber Executives in Charge (PBS): Adam Dylewski, Maribel Lopez Director of Programming (PBS): Gabrielle Ewing
Spacetime is produced by Kornhaber Brown for PBS Digital Studios. This program is produced by Kornhaber Brown, which is solely responsible for its content. © 2022 PBS. All rights reserved.
End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka
Special Thanks to Our Patreon Supporters
Big Bang Level Gautam Shine Zachary Wilson Adam Hillier Bryce Fort Peter Barrett David Neumann Charlie Leo Koguan Ahmad Jodeh Alexander Tamas Morgan Hough Amy Hickman Juan Benet Vinnie Falco Fabrice Eap Mark Rosenthal David Nicklas Daniel Muzquiz
Quasar Level Alex Kern Ethan Cohen Stephen Wilcox Christina Oegren Mark Heising Hank S
Hypernova Level Ken S Gregory Forfa Kirk Honour Mark Evans drollere Joe Moreira Marc Armstrong Scott Gorlick Paul Stehr-Green Russell Pope Ben Delo Scott Gray Антон Кочков John R. Slavik Mathew Donal Botkin John Pollock Edmund Fokschaner chuck zegar Jordan Young Daniel Muzquiz
Gamma Ray Burst Level Mason Dillon Harsh Khandhadia Thomas Tarler bsgbryan Sean McCaul Carsten Quinlan Susan Albee Frank Walker Matt Q WhizBangery MHL SHS Terje Vold Anatoliy Nagornyy comboy Andre Stechert Paul Wood Kent Durham jim bartosh Nubble Scott R Calkins The Mad Mechanic Ellis Hall John H. Austin, Jr. Diana S Ben Campbell Faraz Khan Almog Cohen Alex Edwards Ádám Kettinger MD3 Endre Pech Daniel Jennings Cameron Sampson Geoffrey Clarion Darren Duncan Russ Creech Jeremy Reed Eric Webster David Johnston Web Browser Michael Barton Mr T Isaac Suttell Devon Rosenthal Oliver Flanagan Bleys Goodson Robert Walter Bruce B Simon Oliphant Mirik Gogri Mark Delagasse Mark Daniel Cohen Nickolas Andrew Freeman Shane Calimlim Robert Ilardi Eric Kiebler Craig Stonaha Martin Skans The Art of Sin Graydon Goss Frederic Simon Tonyface John Robinson A G David Neal justahat John Funai Tristan Bradley Jenkins Daniel Stříbrný Luaan Cody Thomas Dougherty King Zeckendorff Dan Warren Patrick Sutton John Griffith Daniel Lyons DFaulk Learn more about your ad choices. Visit megaphone.fm/adchoices
More from PBS Space Time
Learn More About Anydesk: https://anydesk.com/spacetime
Take the Space Time Fan Survey Here: https://forms.gle/wS4bj9o3rvyhfKzUAUploaded 27-04-22PBS Member Stations rely on viewers like you. To support your local station, go to:http://to.pbs.org/DonateSPACESign Up on Patreon to get access to the Space Time Discord!https://www.patreon.com/pbsspacetimeFermilab physicists really care about the mass of the W boson. They spent nearly a decade recording collisions in the Tevatron collider and another decade analysing the data. This culminated in the April 7 announcement that this obscure particle’s mass seems to be heavier than expected. So why do we care? Because understanding why this particle even has mass was one of the most important breakthroughs in our understanding of the subatomic world. And because measuring its precise mass either doubles down on our current understanding or reveals a path to an even deeper knowledge. The FermiLab discrepancy is a tantalizing hint of the latter.Need Catch Up On Your Fundamental Forces?https://youtube.com/playlist?list=PLsPUh22kYmNAnurqRx9JlDGukZCsYcLhFCheck out the Space Time Merch Storehttps://www.pbsspacetime.com/shopSign up for the mailing list to get episode notifications and hear special announcements!https://mailchi.mp/1a6eb8f2717d/spacetimeHosted by Matt O'DowdWritten by Fernando Franco Félix, Graeme Gossel, and Matt O'Dowd Post Production by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal and Stephanie FariaGFX Visualizations: Fernando Franco FélixDirected by Andrew KornhaberAssociate Producer: Bahar GholipourExecutive Producers: Eric Brown and Andrew KornhaberExecutives in Charge (PBS): Adam Dylewski, Maribel Lopez Director of Programming (PBS): Gabrielle Ewing Spacetime is produced by Kornhaber Brown for PBS Digital Studios.This program is produced by Kornhaber Brown, which is solely responsible for its content.© 2022 PBS. All rights reserved.End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroidekaSpecial Thanks to Our Patreon SupportersBig Bang SponsorsBryce FortMark EvansDavid TaicletDaniel AlexiucPeter BarrettDavid NeumannCharlieLeo KoguanSandy WuAhmad JodehAlexander TamasMorgan HoughAmyJuan BenetVinnie FalcoFabrice EapMark RosenthalDavid NicklasQuasar SupportersAlex KernEthan CohenStephen WilcoxChristina OegrenMark HeisingHank SHypernova Supporterswilliam bryanKirk HonourdrollereJoe MoreiraMarc ArmstrongScott GorlickPaul Stehr-GreenAdam WaltersRussell PopeBen DeloScott GrayАнтон КочковJohn R. SlavikMathewDonal BotkinJohn PollockEdmund FokschanerJoseph Salomonechuck zegarJordan YoungDaniel MuzquizGamma Ray Burst SupportersCarsten QuinlanSusan AlbeeFrank WalkerMatt QWhizBangeryTony AffinitoAvi YashchinMHL SHSKory KirkTerje VoldAnatoliy NagornyycomboyBrett BakerJeremy SollerJonathan ConerlyAndre StechertRoss BohnerPaul WoodKent Durhamjim bartoshNubbleChris NavridesScott R CalkinsThe Mad MechanicEllis HallJohn H. Austin, Jr.Diana SBen CampbellFaraz KhanAlmog CohenAlex EdwardsÁdám KettingerMD3Endre PechDaniel JenningsCameron SampsonPratik MukherjeeGeoffrey ClarionNateDarren DuncanRuss CreechJeremy ReedEric WebsterDavid JohnstonWeb BrowserMichael BartonChristopher BarronJames RamseyMr TAndrew MannIsaac SuttellDevon RosenthalOliver FlanaganBleys GoodsonRobert WalterBruce BSimon OliphantMirik GogriMark DelagasseMark Daniel CohenBrandon LattinNickolas Andrew FreemanShane CalimlimTybie FitzhughRobert IlardiEric KieblerCraig StonahaMartin SkansThe Art of SinGraydon GossFrederic SimonTonyfaceJohn RobinsonA GDavid NealKevin LeejustahatJohn FunaiTristanBradley JenkinsKyle HoferDaniel StříbrnýLuaanCodyThomas DoughertyKing ZeckendorffNick VirtueScott GossettDan WarrenPatrick SuttonDaniel LyonsDFaulkKevin Warne Learn more about you Learn more about your ad choices. Visit megaphone.fm/adchoices
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE↓ More info below ↓Uploaded 21-10-19Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetimeCheck out the Space Time Merch Storehttps://pbsspacetime.com/Invitation to Time Travelers: https://www.youtube.com/post/UgzeIA0O00-bVioxU4t4AaABCQTime travel stories are cool because both the past and future are somehow more interesting that the present and because everyone wants a redo. But so far it appears we’re doomed to live consumed by regret in the eternal, boring present. Time marches on, inexorably and only forward. Or so we thought until Einstein came along. His special and general theories of relativity changed the way we think about time forever, and believe it or not, their raw equations permit time travel. They even tell us how to do it. So let’s review the possibilities, and decide how possible they really are.Hosted by Matt O'DowdWritten by Matt O'DowdGraphics by Leonardo Scholzer and Adriano LealDirected by: Andrew KornhaberExecutive Producers: Eric Brown and Andrew KornhaberEnd Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0QSpecial Thanks to our Big Bang SupportersBig BangAlexander TamasCraig StonahaDavid BarnholdtDavid NicklasFabrice EapJohn SJuan Benetmatt millerMorgan HoughQuasarMark HeisingMark RosenthalVinnie FalcoHypernovachuck zegarDanton SpiveyDonal BotkinEdmund FokschanerHank Sjoe pearceJohn HofmannJohn R. SlavikJordan YoungJoseph SalomoneMathewMatthew O'ConnorSyed AnsarGamma Ray BurstA GAdrien MolyneuxAlecZeroAndreas NautschBradley JenkinsBrandon labonteBrianDan WarrenDaniel LyonsDavid BethalaDFaulkFrederic SimonGeoffrey ShortGraydon GossGreg SmithJames FlowersJamie FrederickJohn FunaiJohn GriffithJohn Michael KerrJohn PollockJohn RobinsonJonathan NesfederJoseph DillmanJosh ThomasKevin LeeKevin WarneKyle HoferMalte UblMichael ConroyNick VirtueNick WrightPaul RoseScott GossettSean WarniahaTatiana VorovchenkoTim StephaniTonyfaceYurii Konovaliuk Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE↓ More info below ↓Uploaded 18-11-19Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetimeCheck out the Space Time Merch Storehttps://pbsspacetime.com/The moment you started observing reality, you hopelessly polluted any conclusions you might make about it. The anthropic principle guarantees that you are NOT seeing the universe in most typical state. But used correctly, this highly controversial idea can be extremely powerful. So, how do you correctly use the anthropic principle?Hosted by Matt O'DowdWritten by Matt O'DowdGraphics by Leonardo Scholzer and Adriano LealDirected by: Andrew KornhaberExecutive Producers: Eric Brown and Andrew Kornhaber End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0QSpecial Thanks to Dr. Flournoy!!! Check out his lectures Below:Particle Physics: https://www.youtube.com/playlist?list=PLDlWMHnDwylijo0yfs3xUN9ad6-YZjPLTGeneral Relativity: https://www.youtube.com/playlist?list=PLDlWMHnDwyliMevB36wgRbjXhJkoN_RUQAccording to the original definitions by Brandon Carter, the weak anthropic principle states that we must live in a place and time in the universe capable of supporting observers - in our case, a habitable biosphere, and the strong anthropic principle, which states that the universe itself must have the conditions necessary for producing environments that, in turn, produce observers. That means the fundamental constants and initial conditions of the universe must be just right to allow nice habitable planets to one day form. Let’s just call it the anthropic principle: we necessarily observe from an environment capable of producing observers; be that environment a planet within a universe or a universe within a multiverse.Thanks to Our Patreon SupportersBig Bang Supporters:Alex FlournoyAlexander TamasCraig StonahaDavid BarnholdtDavid NicklasFabrice EapJohn SJuan Benetmatt millerMorgan HoughQuasar SupportersMark HeisingMark RosenthalVinnie FalcoHypernova Supporterschuck zegarDanton SpiveyDonal BotkinEdmund FokschanerHank SJohn HofmannJohn R. SlavikJordan YoungJoseph SalomoneMathewMatthew O'ConnorSyed AnsarTimothy McCulloch Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE↓ More info below ↓Uploaded 31-03-20Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetimeSign up for the mailing list to get episode notifications and hear special announcements!https://tinyurl.com/yx9cusk5Check out the Space Time Merch Storehttps://pbsspacetime.com/Normal maps are useless inside black holes. At the event horizon - the ultimate point of no return as you approach a black hole - time and space themselves change their character. We need new coordinate systems to trace paths into the black hole interior. But the maps we draw using those coordinates reveal something unexpected - they don’t simply end inside the black hole, but continue beyond. In these maps, black holes become wormholes, and new universes lie on the other side.Hosted by Matt O'DowdWritten by Matt O'DowdGraphics by Leonardo Scholzer, Yago Ballarini, and Pedro OsinskiDirected by: Andrew KornhaberExecutive Producers: Eric Brown and Andrew KornhaberEnd Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0QSpecial Thanks to our Patreon SponsorsBig Bang Supporters:Alexander TamasDavid NicklasFabrice EapJuan BenetMorgan HoughRadu NegulescuQuasar SupportersChristina OegrenMark HeisingVinnie FalcoHypernova Supporterschuck zegarDanton SpiveyDonal BotkinEdmund FokschanerHank SJohn HofmannJohn PollockJohn R. SlavikJordan YoungJoseph SalomoneJulian TyackeMathewMatthew O'ConnorMatthew RyanSyed AnsarTimothy McCullochGamma Ray Burst SupportersA GAdrian HatchAdrien MolyneuxAlecZeroAndreas NautschAngela PriggeArefa AhmadBradley JenkinsBrandon labonteBrandon LattinBrian BlanchardCraig StonahaDan WarrenDaniel LyonsDavid BethalaDFaulkDouglas CantrellEric KieblerFrederic SimonGeoffrey ShortGraydon GossGreg SmithJohn FunaiJohn RobinsonJosh ThomasKevin LeeKevin WarneKyle HoferMalte UblMichael ConroyNick VirtueNick WrightNickolas Andrew FreemanPatrick SuttonPaul RoseProtius ProtiusRandall SylviaRobert IlardiScott GossettSean WarniahaShane CalimlimSipke SchoorstraSteve BradshawTatiana VorovchenkoTim StephaniTonyfaceTybie FitzhughYannick WeynsYurii Konovaliuk Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices