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  3. Is String Theory Testable?

Is String Theory Testable?

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  • H Hans Dietrich

    Slides here.

    D Offline
    D Offline
    Dr No
    wrote on last edited by
    #2

    Yes, here is how you do it:

    bool TestString(string MyString)
    {
    if(MyString=="Hello, world") return true;
    else return false;
    }

    :-D

    E R F B 4 Replies Last reply
    0
    • D Dr No

      Yes, here is how you do it:

      bool TestString(string MyString)
      {
      if(MyString=="Hello, world") return true;
      else return false;
      }

      :-D

      E Offline
      E Offline
      Ennis Ray Lynch Jr
      wrote on last edited by
      #3

      Whats the point?


      File Not Found

      1 Reply Last reply
      0
      • H Hans Dietrich

        Slides here.

        J Offline
        J Offline
        Joe Woodbury
        wrote on last edited by
        #4

        In my opinion, no. String theory is a mess. It doesn't work, so they keep playing mathematical tricks to try to make it work. It now seems to exist solely for the benefit of itself.

        Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke

        G M H 3 Replies Last reply
        0
        • D Dr No

          Yes, here is how you do it:

          bool TestString(string MyString)
          {
          if(MyString=="Hello, world") return true;
          else return false;
          }

          :-D

          R Offline
          R Offline
          Ravi Bhavnani
          wrote on last edited by
          #5

          Almost. Here's how you really do it:

          bool TestString
          (string myString)
          {
          return myString.Equals ("Hello, world");
          }

          :) /ravi

          This is your brain on Celcius Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com

          A M 2 Replies Last reply
          0
          • J Joe Woodbury

            In my opinion, no. String theory is a mess. It doesn't work, so they keep playing mathematical tricks to try to make it work. It now seems to exist solely for the benefit of itself.

            Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke

            G Offline
            G Offline
            Graham Bradshaw
            wrote on last edited by
            #6

            Joe Woodbury wrote:

            now seems to exist solely for the benefit of itself.

            Sort of like Paris Hilton, then? :-D

            1 Reply Last reply
            0
            • R Ravi Bhavnani

              Almost. Here's how you really do it:

              bool TestString
              (string myString)
              {
              return myString.Equals ("Hello, world");
              }

              :) /ravi

              This is your brain on Celcius Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com

              A Offline
              A Offline
              Al Beback
              wrote on last edited by
              #7

              Ravi Bhavnani wrote:

              myString.Equals

              What do you have against the equals operator? :-)


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              R 1 Reply Last reply
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              • R Ravi Bhavnani

                Almost. Here's how you really do it:

                bool TestString
                (string myString)
                {
                return myString.Equals ("Hello, world");
                }

                :) /ravi

                This is your brain on Celcius Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com

                M Offline
                M Offline
                Miszou
                wrote on last edited by
                #8

                Here's how you really, really do it: ASSERT( myString == "Hello, world" ); Thus eliminating those messy if statements from the caller, and as an extra bonus, your code is faster when you release it! ;)


                Sunrise Wallpaper Project | The StartPage Randomizer | A Random Web Page

                1 Reply Last reply
                0
                • J Joe Woodbury

                  In my opinion, no. String theory is a mess. It doesn't work, so they keep playing mathematical tricks to try to make it work. It now seems to exist solely for the benefit of itself.

                  Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke

                  M Offline
                  M Offline
                  Miszou
                  wrote on last edited by
                  #9

                  Yeah, after reading The Elegant Universe[^], I arrived at pretty much the same conclusion. According to the book, some of the mathematics is so complex, that it is impossible to solve! For a "unified theory", it sure does seem way too complicated and unnecessary, especially when you compare it to the elegance and simplicity of something like E = MC2!


                  Sunrise Wallpaper Project | The StartPage Randomizer | A Random Web Page

                  F 1 Reply Last reply
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                  • A Al Beback

                    Ravi Bhavnani wrote:

                    myString.Equals

                    What do you have against the equals operator? :-)


                    SUPPORT OUR TROOPS

                    R Offline
                    R Offline
                    Ravi Bhavnani
                    wrote on last edited by
                    #10

                    Nothing! But the original method won't compile. :) /ravi

                    This is your brain on Celcius Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com

                    A 1 Reply Last reply
                    0
                    • D Dr No

                      Yes, here is how you do it:

                      bool TestString(string MyString)
                      {
                      if(MyString=="Hello, world") return true;
                      else return false;
                      }

                      :-D

                      F Offline
                      F Offline
                      Fernando A Gomez F
                      wrote on last edited by
                      #11

                      Shorter: ;P

                      bool TestString(string MyString)
                      {
                      return MyString == "Hello, world";
                      }

                      A polar bear is a bear whose coordinates has been changed in terms of sine and cosine. Personal Site

                      1 Reply Last reply
                      0
                      • M Miszou

                        Yeah, after reading The Elegant Universe[^], I arrived at pretty much the same conclusion. According to the book, some of the mathematics is so complex, that it is impossible to solve! For a "unified theory", it sure does seem way too complicated and unnecessary, especially when you compare it to the elegance and simplicity of something like E = MC2!


                        Sunrise Wallpaper Project | The StartPage Randomizer | A Random Web Page

                        F Offline
                        F Offline
                        Fernando A Gomez F
                        wrote on last edited by
                        #12

                        Miszou wrote:

                        For a "unified theory", it sure does seem way too complicated and unnecessary

                        Yet QM's maths are darker and more complicated than string theory's. I believe that ST (the M Theory in particular) is the TOE. Yet it'll take too much to prove it, at least with the quantity of enery we are able nowadays to produce. BTW, I also read that book, very interesting one. You could take a look to the ST site[^] as well.

                        A polar bear is a bear whose coordinates has been changed in terms of sine and cosine. Personal Site

                        A 1 Reply Last reply
                        0
                        • J Joe Woodbury

                          In my opinion, no. String theory is a mess. It doesn't work, so they keep playing mathematical tricks to try to make it work. It now seems to exist solely for the benefit of itself.

                          Anyone who thinks he has a better idea of what's good for people than people do is a swine. - P.J. O'Rourke

                          H Offline
                          H Offline
                          hairy_hats
                          wrote on last edited by
                          #13

                          I agree. If you create a system with enough degrees of freedom (dimensions) you can make it fit any solution so it's no wonder it appears to work.

                          1 Reply Last reply
                          0
                          • F Fernando A Gomez F

                            Miszou wrote:

                            For a "unified theory", it sure does seem way too complicated and unnecessary

                            Yet QM's maths are darker and more complicated than string theory's. I believe that ST (the M Theory in particular) is the TOE. Yet it'll take too much to prove it, at least with the quantity of enery we are able nowadays to produce. BTW, I also read that book, very interesting one. You could take a look to the ST site[^] as well.

                            A polar bear is a bear whose coordinates has been changed in terms of sine and cosine. Personal Site

                            A Offline
                            A Offline
                            Andy Brummer
                            wrote on last edited by
                            #14

                            Fernando A. Gomez F. wrote:

                            Yet QM's maths are darker and more complicated than string theory's.

                            If you are talking about Quantum Mechanics, string theory is an extension of QM. String theory is much more complex then Quantum Field Theory which is the most complicated form of Quantum Mechanics. It also happens to be the most accurately tested theory mankind has been able to develop to date.


                            I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

                            D 1 Reply Last reply
                            0
                            • A Andy Brummer

                              Fernando A. Gomez F. wrote:

                              Yet QM's maths are darker and more complicated than string theory's.

                              If you are talking about Quantum Mechanics, string theory is an extension of QM. String theory is much more complex then Quantum Field Theory which is the most complicated form of Quantum Mechanics. It also happens to be the most accurately tested theory mankind has been able to develop to date.


                              I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

                              D Offline
                              D Offline
                              Dan Neely
                              wrote on last edited by
                              #15

                              General relativity is the 2nd most accurately tested theory (actually I thought it was the other way around, but regardless GR and QFT are the top 2). superstring/m-theory is the simplest melding of the two that doesn't produce obviously nonsense results. The fact that is appears to be pointing towards an (effectively) infinite multiverse instead of a single set of rules for the universe is potentially troubling but IMO no more so than the dozens of magic numbers that the existing theories set by fiat to make themselves work. The CMB may contain data that would shed light on the multiverse issue if we can measure with enough extra digits of precision. Limitations of current math preclude anything definitive, but math being well ahead of physics has only been true for the few centuries between newton and the present. The fact that physic theory has caught up with the math theoreticians shouldn't be seen as a flaw with the physics itself.

                              -- CleaKO The sad part about this instance is that none of the users ever said anything [about the problem]. Pete O`Hanlon Doesn't that just tell you everything you need to know about users?

                              A 1 Reply Last reply
                              0
                              • D Dan Neely

                                General relativity is the 2nd most accurately tested theory (actually I thought it was the other way around, but regardless GR and QFT are the top 2). superstring/m-theory is the simplest melding of the two that doesn't produce obviously nonsense results. The fact that is appears to be pointing towards an (effectively) infinite multiverse instead of a single set of rules for the universe is potentially troubling but IMO no more so than the dozens of magic numbers that the existing theories set by fiat to make themselves work. The CMB may contain data that would shed light on the multiverse issue if we can measure with enough extra digits of precision. Limitations of current math preclude anything definitive, but math being well ahead of physics has only been true for the few centuries between newton and the present. The fact that physic theory has caught up with the math theoreticians shouldn't be seen as a flaw with the physics itself.

                                -- CleaKO The sad part about this instance is that none of the users ever said anything [about the problem]. Pete O`Hanlon Doesn't that just tell you everything you need to know about users?

                                A Offline
                                A Offline
                                Andy Brummer
                                wrote on last edited by
                                #16

                                The biggest problem I have with theoretical physics right now is that they are trying to preserve our ignorance in the theory. There is a huge gulf between the energies that we can study and the energies that we know where things get interesting and quantum mechanics and gravity interact. Physicists can predict out a little bit past the energies that we can reach, but we have no idea about the forces and particles that exist between the strong force and the unification scale which is a larger energy range then that between humans and the nucleus. All the current theories are based on the assumption that there are no new interesting physics in that entire energy range. That's why I think the current theories are interesting mathematics, but I don't think they will provide much insight, since I think there is a very slim chance that we won't find anything in that gulf.


                                I can imagine the sinking feeling one would have after ordering my book, only to find a laughably ridiculous theory with demented logic once the book arrives - Mark McCutcheon

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                                • R Ravi Bhavnani

                                  Nothing! But the original method won't compile. :) /ravi

                                  This is your brain on Celcius Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com

                                  A Offline
                                  A Offline
                                  Al Beback
                                  wrote on last edited by
                                  #17

                                  Ravi Bhavnani wrote:

                                  Nothing! But the original method won't compile.

                                  What do you mean? Oh, you're compiling in Java. ;P


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                                  R 1 Reply Last reply
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                                  • D Dr No

                                    Yes, here is how you do it:

                                    bool TestString(string MyString)
                                    {
                                    if(MyString=="Hello, world") return true;
                                    else return false;
                                    }

                                    :-D

                                    B Offline
                                    B Offline
                                    Bradml
                                    wrote on last edited by
                                    #18

                                    bool TestString(){
                                    return true;
                                    }


                                    Brad Australian - Christian Graus on "Best books for VBscript" A big thick one, so you can whack yourself on the head with it.

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                                    • A Al Beback

                                      Ravi Bhavnani wrote:

                                      Nothing! But the original method won't compile.

                                      What do you mean? Oh, you're compiling in Java. ;P


                                      SUPPORT OUR TROOPS

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                                      R Offline
                                      Ravi Bhavnani
                                      wrote on last edited by
                                      #19

                                      Al Beback wrote:

                                      Oh, you're compiling in Java.

                                      No, C#. /ravi

                                      This is your brain on Celcius Home | Music | Articles | Freeware | Trips ravib(at)ravib(dot)com

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