[ExI] Silence in the sky—but why?

[BillK]

On Mon, Aug 26, 2013 at 5:32 PM, Eugen Leitl  wrote:
> The best chance to observe expansion is to be expansive yourself.
> Expansive observers are not extinguished by a passing wave of other
> observers, and they traverse much of the visible universe, eventually
> observing everything there is to observe, including other expansive
> observers. Pioneer species are succeeded by the other kind.
>

Forget the rest of the universe. Let's just look at our galaxy.
100,000 light years diameter, 100 to 400 billion stars.

As we are still here, you must be claiming that no other space
expansive species has arisen in our galaxy as it wouldn't take very
long to eat the Milky Way. Many stars in our galaxy are billions of
years older than our sun.

>
> You can't observe very well if you're dead. I keep saying it, but
> you don't seem to register it for some reason.
>

I agree! So you are saying we must be the first space species in our
galaxy. That's a big claim.


>
> No. We're seeing the early beginnings as early beginnings. We do not
> know how remote areas look right now. Relativistic observers are hard
> to observe due to the anthropic effect. You don't see them coming until
> they're almost here, and they leave no pre-expansive observers in their
> wake any more than a colony of E. coli leaves pristine agar behind.
> (But other species that thrive on E. coli will follow).
>

The Milky Way is in the Local Group of galaxies, Up to about 11
million light years away. So we would be well able to see if any of
them were being eaten. Unless it all started less than 11 million
years ago - a tall order!.
Age of universe - 14 billion years. Solar System - 4.5 billion years
old. Humans - a few million years.


>
> It requires a lot of IQ of you want to build a dog, in fact,
> it's so hard, we can't do it yet. Yet dogs breed fine.
>
>

But dogs don't build starships.


BillK