Re: Cosmological redshift and Doppler shift

In article <[EMAIL PROTECTED]>,
[EMAIL PROTECTED] writes: 

> I'd like to ask anyone who's been following the discussion about the
> low-redshift limit of the cosmological redshift to answer the
> following question.  I'm going to list a sequence of statements, all
> of which I believe.  I'll order them from least to most controversial.
> At what point, if any, do you part company with me?

These are all limiting cases, so no problem.

We don't disagree on the numbers nor on when what approximations are
appropriate.  My crusade is purely pedagogical.  Especially for folks 
who don't understand the (special-relativistic) Doppler shift, I think 
it is more trouble than it is worth to mention it then say "but in 
practice, we can forget this".

I hope we can ALL agree on the statement "if the redshift is large
enough that the relativistic Doppler formula "should" be used, then the
relativistic Doppler formula is completely inappropriate, in our
universe".