What Is Quantum Mechanics Really Telling Us? | World Science Festival

Comments · 850

• SP

  @spgety · 4 months ago

  I’ve listened to a lot of different people talk on a lot of different subjects here on YouTube. But Brian Green is really a pleasure to listen to and he does such a service to humanity in general by putting this out there.

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• AD

  @adityakalway · 4 months ago

  What a privilege to listen to these kinda discussions for free.

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• ZB

  @zbig47 · 4 months ago

  This was too much fun. Green's precise questions, Deutsch on a serious ride. Beautiful.

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• DO

  @dodgyass11 · 4 months ago

  Finally these 2 together in superposition ❤

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• SN

  @snappycat_times_ten · 4 months ago

  Love Brian’s genuine engagement with David, and how civil and respectful they are when they challenge and reject their differences. Wonderful. <br><br>Reminds me of when as a child I used to listen to adults talking and enjoy it, mostly because I didn’t understand it, but was impressed by the complexity of it.

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• GA

  @Ganba11235 · 2 weeks ago

  This interview is a real treasure, Brian Greene with his excellent questions and David Deutsch with his outstanding and thought provoking answers. Thank you! 🙏🙏🙏

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• GR

  @GraniteStateColin · 4 months ago

  Great episode, really spoke to me: When I took my undergraduate quantum mechanics course toward my physics B.S. (back in the early 1990s), I was frustrated that the professor did not seem to care about any of these implications or questions. It really turned me off the subject to the point I found private sector invitations and opportunities more interesting and didn&apos;t go to graduate school for physics as I&apos;d originally expected. I don&apos;t think he ever said, &quot;Shut up and calculate,&quot; but that is an absolutely perfect description of the attitude he held and the way he taught the subject. Physics has always been my favorite subject, but the reason is because it is the study of how the universe works (what could be more profound?) and at its best when it cares about the &quot;why&quot; that goes along with it. When you remove those &quot;why&quot; questions, at least for me, it robs the subject of all interest.<br><br>By the way, thank you for these discussions that restore the joy in those &quot;why&quot; questions. I used your PBS Elegant Universe video in physics teaching I offered as a optional summer program for interested children many years later. I hope that together we imparted both knowledge and, even more important, a lifelong hunger to seek out understanding not just how the universe works, but also to always dig deeper into those &quot;why&quot; questions.

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• OX

  @oxident-954 · 4 months ago

  Thanks sooo much for having Deutsch on, absolute legend

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• CO

  @constantinwallhauser8532 · 4 months ago

  Wow! My two favourite scientists in the world in ONE talk!! THANK YOU BOTH a billion times for your work and your books!!! And greetings from Duesseldorf!

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• SN

  @snowpants2212 · 4 months ago

  I really appreciate how deeply and sincerely Greene has engaged with the foundations of physics in recent years.

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• JA

  @jason-fq1tk · 2 months ago (edited)

  Yes, rather than reality, probability is just telling us what preponderance to expect from a number of repeated same experiments, while leaving it entirely possible for any single outcome to be divergent from the expected one.

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• PA

  @pablokagioglu2546 · 4 months ago

  Thanks Brian for bringing us another enlightening session. I like David’s line of thinking…<br><br>My layman’s view of Quantum, is that just because “anything” CAN happen with probability, &nbsp;doesn’t mean that “everything” IS happening… Reality is one… <br><br>You don’t walk out of a casino with an amount of money based on the odds; &nbsp;the winnings are based on what “actually” happened.<br><br>Predictions are extremely useful but they are not reality. If we think two things are happening at once, it is most likely that we don’t really understand what is actually going on. <br><br>Our brains after all, are finite entities, with finite capabilities, it is quite possible we just don’t get get it and may never get it. <br><br>Explaining the future may be &nbsp;“probabilistic” but it is not “reality” just yet. I don’t subscribe to marrying the word “Quantum” with “Reality”<br><br>You cannot “measure” the future, you can try to predict it. I don’t know how tall my kid is going to be in 5 years, but I may have a pretty good idea.

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