On Saturday, December 29, 2018 at 3:39:25 PM UTC-6, Brent wrote:
>
>
>
> On 12/29/2018 12:50 PM, Philip Thrift wrote:
>
>
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> On Saturday, December 29, 2018 at 11:02:30 AM UTC-6, Brent wrote: 
>>
>>
>>
>> On 12/29/2018 1:58 AM, Bruno Marchal wrote: 
>> > I use number because people are more familiar with them. Most people 
>> > can easily conceived that “17 is odd” is true independently of them, 
>> > but would have an harder time to conceive that KKK=K independent of 
>> > them, even if this does not mean much more than the first (left) 
>> > projection of (K, K) is K. 
>>
>> That's a good example.  People would immediately recognize that KKK=K is 
>> just a convention.  They are deceived that "17 is odd" is an eternal 
>> truth independent of human thought because they generalize from their 
>> experience with physically countable things. 
>>
>> Brent 
>>
>
>
> I was thinking that if there is a group X of objects of the same mass, if 
> X can be split into two groups A and B separated by a distance such that A 
> and B pull (gravitate towards) each other equally, then X is even.
>
>
> Forces are equal and opposite (from conservation of momentum) no matter 
> how the objects are grouped.
>
> Brent
>
> (or something like that)
>
> So gravity knows even and odd. :)
>
> - pt
>
>



I thought *gravity could tell the difference between even and odd*, like 
there is no way to separate an *odd number* of pennies on a balance scale 
[ https://www.mathsisfun.com/definitions/balance-scales.html ] and have the 
scales be in balance.

- pt 

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