Drexel dragonThe Math ForumDonate to the Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.

Math Forum » Discussions » sci.math.* » sci.math.independent

Topic: Acoustic Metrics, and the OPERA neutrino result
Replies: 5   Last Post: Feb 16, 2012 11:15 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Shmuel (Seymour J.) Metz

Posts: 3,271
Registered: 12/4/04
Re: Acoustic Metrics, and the OPERA neutrino result
Posted: Feb 16, 2012 11:15 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

In <jhhns0$q2l$1@speranza.aioe.org>, on 02/16/2012
at 01:59 AM, Eric Baird <-@-.com> said:

>I mean, it was /literally/ a non-subject, there was even a slightly
>self-serving clause in Misner, Thorne and Wheeler's "Gravitation"
>that went as far as defining a metric theory as being "a theory that
>had a metric and reduced to special relativity".

Nonsense; a definition is only a definition. Where does MTW say that a
non-metric theory is a "non-subject"?

>.... So a metric theory founded on an acoustic metric supposedly
>/wasn't/ a metric theory.

So? Neither is QDT, which is well accepted.

>It wasn't anything.

Non sequitor.

>If you thought "rigorously" using MTW definitions, then the very
>/idea/ of an acoustic metric theory was literally "unthinkable",
>in the Orwellian sense.

Really? Why doesn't the same applY to plain old QM?

>The language was too customised to support the current system
>to allow even the concept of a serious alternative,

No. Nothing in the language precludes defining new terms. Now, if you
want to complain that some of the methods are not useful for the work
that you want to pursue, that's par for the course. No sinister
machinations there, just the need to develop new machinery for new

>and an entire field of math and physics research was eliminated
>by our hacking the definitions to make alternative approaches
>impossible "by definition".

There was no hacking and nothing was eliminated. Au contaire, the
definition of "metric" in SR and GR *broadens* the definition from
Mathematics, by allowing a Lorentzian signature.

Shmuel (Seymour J.) Metz, SysProg and JOAT <http://patriot.net/~shmuel>

Unsolicited bulk E-mail subject to legal action. I reserve the
right to publicly post or ridicule any abusive E-mail. Reply to
domain Patriot dot net user shmuel+news to contact me. Do not
reply to spamtrap@library.lspace.org

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.