Re: Gravity as Falling Space

From: Bill Hobba (bhobba_at_rubbish.net.au)
Date: 06/28/04 

Date: Mon, 28 Jun 2004 12:40:43 GMT

"Dirk Van de moortel" <dirkvandemoortel@ThankS-NO-SperM.hotmail.com> wrote
in message news:4MTDc.4827$vV6.2503@news.cpqcorp.net...
>
> "Bill Hobba" <bhobba@rubbish.net.au> wrote in message
news:_kSDc.68653$sj4.30305@news-server.bigpond.net.au...
> >
> > "Dirk Van de moortel" <dirkvandemoortel@ThankS-NO-SperM.hotmail.com>
wrote
> > in message news:v3SDc.4819$2i7.3126@news.cpqcorp.net...
> > >
> > > "Bill Hobba" <bhobba@rubbish.net.au> wrote in message
> > news:IsKDc.68085$sj4.4244@news-server.bigpond.net.au...
> > > >
> > > > "Henry Haapalainen" <kirppu@kolumbus.fi> wrote in message
> > > > news:cbni14$34o$1@phys-news1.kolumbus.fi...
> > > > > Time travelling is not possible. Why?>
> > > >
> > > > Traveling into the future - no problem - traveling into the past -
> > > > grandfather paradoxes
> > >
> > > <Just for the fun of it>
> > > I don't believe in time travel, but I have always
> > > looked at the "grandfather paradox" as a rather
> > > weak argument against it.
> > > Okay, suppose you go to the past and try to kill
> > > your grandfather... That would be a stupid thing to
> > > do since you obviously did not kill him to begin
> > > with... after-all, he created your father and your
> > > father created you, so you can't have killed your
> > > grandfather in the past, at least not before your
> > > father was born. So what if you decide to go back
> > > and kill him anyway? Simple: you will get hit by a
> > > carriage, or he will be out of town when you knock
> > > on his door, or your gun will fail, or you will simply
> > > change your mind... who knows? ;-)
> > > </Just for the fun of it>
> >
> > Sure it is possible nature can somehow conspire to prevent logical
> > paradoxes. But since those paradoxes are really only limited by our
> > imagination it would be slightly strange that nature decided to behave
> > depending on what we decided to do - wait a minute - reminds me of
> > something - QM?
>
> Hm, I don't believe in nature conspiring to prevent
> paradoxes... In a manner of speaking it's the theories
> that we make who do the "conspiring" - i.o.w. we
> prefer constructing and using theories that are capable
> of resolving paradoxes as much as possible, thereby
> taking into account the rather limited capabilities of
> our brains. If somehow we get stuck with a theory
> that can't get rid of a particular paradox, we'll keep
> and use it for practical purposes, until some smart
> thinker comes with a better theory...

Good point. We have actually engineered our theories to prevent it. It is
obvious that the theories we make up have no effect on how nature works so I
must retract my 'conspire' idea.

Thanks
Bill

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