Aliens need a lot motime to find us

On 1/24/07, joe@... wrote:
(...)
> Though the smaller a black hole is, the faster it evaporates. So I'm
> not sure how tiny a black hole could be, and still stick around long
> enough for us to find it. Anybody know?
(...)

I think that by "tiny" Douglas meant "a few solar masses", as opposed
to the *millions* of solar masses of the Central Galactic Black Hole.
And a black hole with mass of a few sols would take much more than the
currently accepted age of the Universe to evaporate.