On Saturday, December 29, 2018 at 5:32:52 PM UTC-6, Brent wrote: > > > > On 12/29/2018 2:44 PM, Philip Thrift wrote: > > > > On Saturday, December 29, 2018 at 3:39:25 PM UTC-6, Brent wrote: >> >> >> >> 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 >> >> > > > > 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. > > > OK. That's comparing the attraction to a third body (the Earth) not into > two groups that gravitate toward each other. > > Brent >
Anyway, my main point of the example of course: There is no "even" or "odd" prior to the existence of* matter.* - pt -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
