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Re: Is euclidean geometry falsified?

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On 6/21/2016 12:38 AM, Y wrote:
> On Tuesday, June 21, 2016 at 3:16:03 AM UTC+10, Odd Bodkin wrote:
>> On 6/16/2016 6:20 AM, Y wrote:
>>> Resounding no.
>>>
>>> Mathematics aren't selected on their ability to model the world, they are selected for their
>>> internal consistency. As it happens, Euclidean geometry is internally consistent, and has
>>> found countless applications (including in nearly all engineering).
>>>
>>> -y
>>>
>>
>> When you say "Mathematics aren't selected on...", can you explain
>> selected for what?
>>
>> Riemannian geometry is just as internally consistent as Euclidean
>> geometry. So what would then be the selection criteria?
>
>
> In mathematics, models are selected via proof (i.e. internal consistency). In science,
> mathematics are selected via evidence and the ability to measure predictions.
>
> The selection criteria for Reimannian geometry in science, which is also internally consistent
> mathematically, is ability to demonstrate accuracy when being used to make predictions about the
> world. You couldn't derive this from how I explained it ?

OK, so just to catch up here, you cannot disprove Euclidean geometry 
mathematically, because it is internally consistent. But the mathematics 
of Riemannian geometry is selected scientifically because of its 
accuracy in making predictions about the world -- that is, on its 
ability to accurately model the world.

>
> -y
>
>
>
>
>


-- 
Odd Bodkin --- maker of fine toys, tools, tables

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Is euclidean geometry falsified? mlwozniak@wp.pl - 2016-06-16 01:07 -0700
  Re: Is euclidean geometry falsified? Y <yanarchi@hotmail.com> - 2016-06-16 04:20 -0700
    Re: Is euclidean geometry falsified? mlwozniak@wp.pl - 2016-06-16 04:36 -0700
    Re: Is euclidean geometry falsified? Odd Bodkin <bodkinodd@gmail.com> - 2016-06-20 12:16 -0500
      Re: Is euclidean geometry falsified? Y <yanarchi@hotmail.com> - 2016-06-20 22:38 -0700
        Re: Is euclidean geometry falsified? mlwozniak@wp.pl - 2016-06-20 23:23 -0700
        Re: Is euclidean geometry falsified? Odd Bodkin <bodkinodd@gmail.com> - 2016-06-21 08:36 -0500
          Re: Is euclidean geometry falsified? Y <yanarchi@hotmail.com> - 2016-06-21 07:02 -0700
          Re: Is euclidean geometry falsified? Y <yanarchi@hotmail.com> - 2016-06-21 07:06 -0700
            Re: Is euclidean geometry falsified? Sylvia Else <sylvia@not.at.this.address> - 2016-06-22 11:52 +1000
              Re: Is euclidean geometry falsified? Y <yanarchi@hotmail.com> - 2016-06-27 09:50 -0700
  Re: Is euclidean geometry falsified? Rafael Valls Hidalgo-Gato <rvalls162@gmail.com> - 2016-06-16 06:37 -0700
  Re: Is euclidean geometry falsified? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-06-17 10:12 -0500
    Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-17 17:34 +0200
      Re: Is euclidean geometry falsified? Y <yanarchi@hotmail.com> - 2016-06-18 03:11 -0700
    Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-17 17:55 +0200
      Re: Is euclidean geometry falsified? Sylvia Else <sylvia@not.at.this.address> - 2016-06-18 13:00 +1000
        Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-18 21:54 +0200
          Re: Is euclidean geometry falsified? Sylvia Else <sylvia@not.at.this.address> - 2016-06-20 10:56 +1000
            Re: Is euclidean geometry falsified? mlwozniak@wp.pl - 2016-06-19 23:09 -0700
              Re: Is euclidean geometry falsified? Sylvia Else <sylvia@not.at.this.address> - 2016-06-20 19:19 +1000
                Re: Is euclidean geometry falsified? mlwozniak@wp.pl - 2016-06-20 02:43 -0700
      Re: Is euclidean geometry falsified? Y <yanarchi@hotmail.com> - 2016-06-18 03:14 -0700
        Re: Is euclidean geometry falsified? Virgil <VIRGIL@VIRGIL.com> - 2016-06-18 10:41 -0600
        Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-18 21:58 +0200
    Re: Is euclidean geometry falsified? Rafael Valls Hidalgo-Gato <rvalls162@gmail.com> - 2016-06-17 14:27 -0700
      Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-17 23:46 +0200
        Re: Is euclidean geometry falsified? JanPB <filmart@gmail.com> - 2016-06-17 15:33 -0700
          Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-18 21:30 +0200
      Re: Is euclidean geometry falsified? JanPB <filmart@gmail.com> - 2016-06-17 15:45 -0700
        Re: Is euclidean geometry falsified? A Nony Mouse <abc@cef.ghi> - 2016-06-17 17:08 -0600
          Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-18 21:38 +0200
        Re: Is euclidean geometry falsified? Gary Harnagel <hitlong@yahoo.com> - 2016-06-17 16:12 -0700
          Re: Is euclidean geometry falsified? A Nony Mouse <abc@cef.ghi> - 2016-06-17 18:39 -0600
            Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-18 21:40 +0200
              Re: Is euclidean geometry falsified? JanPB <filmart@gmail.com> - 2016-06-18 15:17 -0700
        Re: Is euclidean geometry falsified? RichD <r_delaney2001@yahoo.com> - 2016-06-21 09:45 -0700
      Re: Is euclidean geometry falsified? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-06-19 12:06 -0500
        Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-19 20:50 +0200
          Re: Is euclidean geometry falsified? Sylvia Else <sylvia@not.at.this.address> - 2016-06-20 12:16 +1000
            Re: Is euclidean geometry falsified? Virgil <VIRGIL@VIRGIL.com> - 2016-06-19 22:15 -0600
              Re: Is euclidean geometry falsified? Sylvia Else <sylvia@not.at.this.address> - 2016-06-20 14:29 +1000
                Re: Is euclidean geometry falsified? mlwozniak@wp.pl - 2016-06-19 23:27 -0700
                Re: Is euclidean geometry falsified? The Starmaker <starmaker@ix.netcom.com> - 2016-06-20 11:08 -0700
        Re: Is euclidean geometry falsified? Y <yanarchi@hotmail.com> - 2016-06-20 01:53 -0700
          Re: Is euclidean geometry falsified? mlwozniak@wp.pl - 2016-06-20 02:17 -0700
        Re: Is euclidean geometry falsified? Rafael Valls Hidalgo-Gato <rvalls162@gmail.com> - 2016-06-20 08:39 -0700
          Re: Is euclidean geometry falsified? JanPB <filmart@gmail.com> - 2016-06-20 11:31 -0700
            Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-20 20:51 +0200
              Re: Is euclidean geometry falsified? JanPB <filmart@gmail.com> - 2016-06-20 12:13 -0700
                Re: Is euclidean geometry falsified? Maciej Woźniak <mlwozniak@wp.pl> - 2016-06-20 21:44 +0200
                Re: Is euclidean geometry falsified? JanPB <filmart@gmail.com> - 2016-06-20 15:46 -0700
                Re: Is euclidean geometry falsified? mlwozniak@wp.pl - 2016-06-20 23:10 -0700
                Re: Is euclidean geometry falsified? JanPB <filmart@gmail.com> - 2016-06-21 09:04 -0700

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