Re: FTL, ether and wind

In rec.arts.sf.written, Crown-Horned Snorkack <chornedsnorkack@[EMAIL PROTECTED]
>
wrote:
> Just why would FTL lead to time travel?

Because inertial frames are equivalent in all the physics we know.

> But why should inertial frames be equivalent when it comes to FTL?

If you assume otherwise, you can get FTL without causal problems. Many
authors have done this, notably Charles Sheffield.
 
> Also, what happens if Earth turns out to be subject to strong, indeed
> relativistic ether wind?

Then FTL travel is asymmetric.
 
> For example, because Earth turns out to be some distance away from the
> epicentre of Big Bang?

According to the physics we know, there is no epicenter. If the
preferred frame for FTL matches up with isotropic cosmic background
radiation, then we're close to still.

> Is it possible to come up with a noncontradictory metrics where ether
> itself expands?

Now you're past me. :)

--Z

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