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Rule and Exception

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  • A Offline
    A Offline
    Amarnath S
    wrote on last edited by
    #1

    Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

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    • A Amarnath S

      Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

      M Offline
      M Offline
      Mike Hankey
      wrote on last edited by
      #2

      Friends don't let friends program in Basic.

      If you can't find time to do it right the first time, how are you going to find time to do it again? PartsBin an Electronics Part Organizer - Release Version 1.4.0 (Many new features) JaxCoder.com Latest Article: EventAggregator

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      • A Amarnath S

        Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

        O Offline
        O Offline
        obermd
        wrote on last edited by
        #3

        Kurt Gödel proved a version of Statement 1: In any formal language, there are questions that can be asked but not answered. A perfect example of Gödel's incompleteness law can be found in math: - Positive Integers (lengths) can subtract a larger number from a smaller number. The answer is a negative integer, leading to: - All integers can divide and result in a fraction, leading to: - Fractions can be used in geometry to result in real numbers, leading to: - Real Numbers can have square roots that are imaginary, leading to: - Complex numbers, etc...

        E 1 Reply Last reply
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        • A Amarnath S

          Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

          P Offline
          P Offline
          PIEBALDconsult
          wrote on last edited by
          #4

          I reject statement 1.

          1 Reply Last reply
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          • A Amarnath S

            Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

            K Offline
            K Offline
            k5054
            wrote on last edited by
            #5

            In a certain village, a barber shaves all those who do not shave themselves. Who shaves the barber?

            "A little song, a little dance, a little seltzer down your pants" Chuckles the clown

            A 1 Reply Last reply
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            • A Amarnath S

              Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

              T Offline
              T Offline
              trønderen
              wrote on last edited by
              #6

              Behind every paradox lies a Cretan.

              Religious freedom is the freedom to say that two plus two make five.

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              • A Amarnath S

                Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

                Richard Andrew x64R Offline
                Richard Andrew x64R Offline
                Richard Andrew x64
                wrote on last edited by
                #7

                A rule having no exception: "death and taxes"

                The difficult we do right away... ...the impossible takes slightly longer.

                T 1 Reply Last reply
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                • Richard Andrew x64R Richard Andrew x64

                  A rule having no exception: "death and taxes"

                  The difficult we do right away... ...the impossible takes slightly longer.

                  T Offline
                  T Offline
                  trønderen
                  wrote on last edited by
                  #8

                  I once discussed that with my religious brother-in-law. He insisted that there are exceptions to that rule. May not to the "taxes" part, though.

                  Religious freedom is the freedom to say that two plus two make five.

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                  • A Amarnath S

                    Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

                    J Offline
                    J Offline
                    jschell
                    wrote on last edited by
                    #9

                    Amarnath S wrote:

                    Would you agree with this conclusion? If so, is there any example of a rule having no exception?

                    Agreeing that a proof is valid is not the same as stating that it must be true. Now claiming that it is true could suggest that one should provide the example. Or provide other discussions that would suggest it is true. Or just believe and dispense with the work. My favorite example with this is geometry (Euclidean) where parallel lines do not intersect. I certainly believe it. And I doubt anyone can provide an example that shows they do intersect. But for that matter they cannot provide an example where they do not intersect either.

                    A 1 Reply Last reply
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                    • A Amarnath S

                      Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

                      J Offline
                      J Offline
                      jmaida
                      wrote on last edited by
                      #10

                      The exception for statement 1 is no exception. Doh

                      "A little time, a little trouble, your better day" Badfinger

                      1 Reply Last reply
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                      • J jschell

                        Amarnath S wrote:

                        Would you agree with this conclusion? If so, is there any example of a rule having no exception?

                        Agreeing that a proof is valid is not the same as stating that it must be true. Now claiming that it is true could suggest that one should provide the example. Or provide other discussions that would suggest it is true. Or just believe and dispense with the work. My favorite example with this is geometry (Euclidean) where parallel lines do not intersect. I certainly believe it. And I doubt anyone can provide an example that shows they do intersect. But for that matter they cannot provide an example where they do not intersect either.

                        A Offline
                        A Offline
                        Amarnath S
                        wrote on last edited by
                        #11

                        jschell wrote:

                        parallel lines do not intersect

                        Though I am not a theoretical physicist, have heard that "space is curved", whatever it means. If space is curved, will there be a possibility of parallel lines meeting? Not sure.

                        J 1 Reply Last reply
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                        • K k5054

                          In a certain village, a barber shaves all those who do not shave themselves. Who shaves the barber?

                          "A little song, a little dance, a little seltzer down your pants" Chuckles the clown

                          A Offline
                          A Offline
                          Amarnath S
                          wrote on last edited by
                          #12

                          The famous Russel's Paradox, from what i remember.

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                          • A Amarnath S

                            Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

                            B Offline
                            B Offline
                            BernardIE5317
                            wrote on last edited by
                            #13

                            You : does a solution to the Russel Paradox exist ChatGPT Yes, several solutions to the Russell Paradox exist, which emerged after Bertrand Russell presented the paradox in 1901. One common solution is to restrict the comprehension principle, which states that for any property, there exists a set of all objects that have that property. By restricting this principle, mathematicians and logicians have been able to formulate set theories, like Zermelo-Fraenkel set theory (ZF) or von Neumann-Bernays-Gödel set theory (NBG), which avoid the paradox by disallowing the formation of certain "self-referential" sets. Another approach is to distinguish between sets and classes, where classes can contain sets but not be sets themselves, thereby sidestepping the contradiction. These solutions have allowed set theory to develop into a foundational framework for mathematics without succumbing to paradoxes like Russell's. Me : If Statement 2 is a rule it must have an exception. Conclusions: Statement 1 has no exception. There is at least one rule which has no exception.

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                            • A Amarnath S

                              jschell wrote:

                              parallel lines do not intersect

                              Though I am not a theoretical physicist, have heard that "space is curved", whatever it means. If space is curved, will there be a possibility of parallel lines meeting? Not sure.

                              J Offline
                              J Offline
                              jschell
                              wrote on last edited by
                              #14

                              Amarnath S wrote:

                              will there be a possibility of parallel lines meeting

                              Spherical geometry rather than Euclidian. But one can also start in on a definition since a line, even theoretical, could still be claimed to be something that must exist in the universe. So if the universe is curved then the line must be as well. But then what happens with the degrees in a right triangle which can only exist if those lines do not intersect.

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                              • O obermd

                                Kurt Gödel proved a version of Statement 1: In any formal language, there are questions that can be asked but not answered. A perfect example of Gödel's incompleteness law can be found in math: - Positive Integers (lengths) can subtract a larger number from a smaller number. The answer is a negative integer, leading to: - All integers can divide and result in a fraction, leading to: - Fractions can be used in geometry to result in real numbers, leading to: - Real Numbers can have square roots that are imaginary, leading to: - Complex numbers, etc...

                                E Offline
                                E Offline
                                englebart
                                wrote on last edited by
                                #15

                                I always think of Godel’s Completeness/Incompleteness theorems when people invent new encoding systems, etc. XML : How do I encode “<“? < Well how do I encode ampersand? & etc. CSV How do you encode a comma? Enclose it in quotes. How do you encode a quote? Double it! My practical interpretation: Define a system: There will always be something outside of its boundaries! My favorite example is good old int getc(); It returns a char or -1 for EOF/End of File. EOF is outside of the char system.

                                1 Reply Last reply
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                                • A Amarnath S

                                  Statement 1: Every rule has an exception. Statement 2: Statement 1 is a rule. Therefore Statement 1 has an exception. Conclusion: There is at least one rule which has no exception. Would you agree with this conclusion? If so, is there any example of a rule having no exception?

                                  S Offline
                                  S Offline
                                  stheller2
                                  wrote on last edited by
                                  #16

                                  All generalities are false.

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