Re: >H Re: The Great Filter

Hal Finney (
Mon, 10 Mar 1997 13:32:25 -0800 (PST)

On Mar 10, 11:14am, Robin Hanson wrote:
> It occurs to me that if the entire filter were due to events like this
> then for 1000 light years around we should see planets with advancing
> life.

Wouldn't it be a smaller region? If the galaxy was peppered with
events which normally wiped out a sphere 1000 ly in size, and we
waited long enough that almost all the galaxy would have been
covered a few times, then there might be a few places which were
left uncovered. They would be little cracks among the bulk of the
galaxy which had experienced the explosions. So I think we would
expect to find ourselves within one of those thin areas just outside
the boundaries of several nearby explosions.