On 12/29/2018 12:50 PM, Philip Thrift wrote:
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
- pt
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