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B Sean Carroll on Why Does Time Exist at All?

  1. Oct 24, 2016 #1
    Interesting TedTalk from Sean Carroll last month.



    At the end he asks the question of whether the big bang was really the beginning. Is this simple multiverse talk? Thoughts?
     
  2. jcsd
  3. Oct 24, 2016 #2

    QuantumQuest

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    It's a nice talk. Now, as a somewhat informed enthusiast, I just think that in order to avoid speculations, scientists of the relevant fields, must first get closer to the Big Bang - orders of subdivisions of sec, than we are today. Only this way, they can conclude if it is the event we believe it is today and consequently search for something before that (or not?). I can't think of any other safe way, to reach a conclusion. But I'd like to see thoughts of the great expert people here in relevant fields (especially by @PeterDonis).
     
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