🚀 go-pugleaf

On Jan 3, 03:26, Tom Roberts <tjroberts...@sbcglobal.net> wrote in
sci.physics.relativity:
> JanPB wrote:
> > I'm no expert on this but the dark matter always seemed to me like an
> > arbitrary tunable parameter thrown in our of sheer desperation.
>
> To assume that we already know about all possible stable elementary
> particles is absurd. If there happen to be additional stable elementary
> particles that don't appear in our labs, then they must be quite
> different from ordinary matter, and several plausible extensions to
> current theories behave just as dark matter behaves in current
> observations. So there's no a priori reason to reject dark matter.
>
> > But
> > then I have the same opinion of the string theory :-)
>
> That is QUITE different! Specifically: dark matter has lots of
> experimental support, but string theory has none.

Not enough Roberts Roberts not enough. Your sycophancy is insufficient
for the moment and Master Lee Smolin is not ready to appoint you as a
member of the Perimeter Institute. Master Lee Smolin believes you have
gone too far in the following two statements of yours:

http://groups.google.ca/group/sci.physics.research/browse_frm/thread/ad68645e95fdc29e?
Tom Roberts, Dec 26, 2007: "There has been a renaissance in tests of
Special Relativity (SR), in part because considerations of quantum
gravity imply that SR may well be violated at appropriate scales (very
small distance, very high energy). It has been seven years since the
last update of this page, and there are over 60 new experiments, many
of which are recent, ingenious, and improve bounds on violations of
local Lorentz invariance by several or many orders of magnitude."

http://groups.google.ca/group/sci.physics.relativity/browse_frm/thread/128cc9ce0b836800?
Tom Roberts, Dec 31, 2007: "The key property of all fundamental
theories of modern physics is Lorentz invariance. So that is what had
better be compatible with some alternative theory, or its proponents
must re-create all of modern physics. Yes, that is a daunting thought,
but it cannot be avoided if you want to seriously propose some other
theory (be it emission/ballistic or other)."

Pentcho Valev
pvalev@yahoo.com