Re: MEDIA: NOVA on Gamma Ray Bursters

From: Eugene Leitl (
Date: Fri Jan 11 2002 - 02:35:32 MST

On Thu, 10 Jan 2002, Spike Jones wrote:

> This isn't at all clear to me. Consider the possibility that the
> universe is a dangerous place. Advanced technology societies may not
> wish to announce their presence. If they are capable of building
> something like Robert's proposed M brains, they might be able to do so
> quickly, as in a few hundred years. The star would appear to wink
> out, at least in geologic time. With sufficiently advanced

We don't know what the constraints are, but it looks like a lot less than
geological time. You should see dimming on decade scale, and it will
accelerate from that. Exponential kinetics.

> technology, they may be able to make theselves nearly invisible.

Right, and since there are non-FIR stars we're not in advanced aliens'
lightcone. In fact because you're reading this message there are no
aliens (=us in their lightcone).

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