On Friday, February 21, 2020 at 5:18:05 PM UTC-6, Brent wrote:
>
>
>
> On 2/21/2020 1:16 PM, Philip Thrift wrote:
>
>
>
> On Friday, February 21, 2020 at 2:33:12 PM UTC-6, Lawrence Crowell wrote:
>>
>> On Thursday, February 20, 2020 at 1:56:02 PM UTC-6, Philip Thrift wrote:
>>>
>>>
>>> On Thursday, February 20, 2020 at 8:58:15 AM UTC-6, Lawrence Crowell
>>> wrote:
>>>>
>>>> It is not so simple. Language as with any symbolic system is
>>>> incomplete. So any symbolic structure will by Gödel's theorem be incapable
>>>> of proving it's consistency. Wittgenstein seemed to recognize this and
>>>> backed away from his Tractus.
>>>>
>>>> Even with basic physics we have F = ma, which has a force, a dynamical
>>>> quantity, equal to mass, kinematical, times acceleration that is
>>>> geometrical. This is a categorical confusion! Yet we appeal to this as a
>>>> fundamental principle. That has a few aspects of metaphysics.But
>>>
>>>
>>>
>>>
>>> But of course "F = ma" is simply a string of characters which is
>>> interpreted by our program(s) of physics. Force, mass, space, time are all*
>>> fictional entities* ("characters" in another sense!) that are fitted
>>> into its framework.
>>>
>>> @phiilipthrift
>>>
>>
>> But, the different parts, F, m and a have different units of measure,
>> which is what is of relevance.
>>
>> LC
>>
>
>
> Didm't Vic say all measurements can be reduced to rulers and clocks?
> Then something to do with
> https://en.wikipedia.org/wiki/Buckingham_%CF%80_theorem
>
>
> Vic said just clocks. The constancy of the speed of light allows time
> measurements to be used to measure distances...and in fact that's how high
> precision distance measurements are made.
>
> Brent
>
>
There are both radar and ruler distances. They are not the same. The radar
distance is obtained with a light ray and clock. The ruler distance is a
distance measured along a spatial ruler.
LC
>
> @philipthrift
>
> @philipthrift
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