Re: SETI
- From: Walter Bushell <proto@xxxxxxxxx>
- Date: Sat, 06 May 2006 14:16:03 -0400
In article <q5a4529pqcp194pv4rdg4uiiuqm79trl6m@xxxxxxx>,
Therion Ware <autodelete@xxxxxxxxxxxxxxx> wrote:
On 28 Apr 2006 07:07:36 -0700, jack.mollier@xxxxxxxxx wrote in message
<1146233256.508223.73100@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>:
George Cleveland wrote:
If intelligence has happened once, chance are it'll happen again.
Whather it's exactly like our intelligence is a different question.
Dinosaurs had 150 million years and never got close...
How do we know that. Look at the existing hominid fossils. they are
not only few in number but very fragmented. And they are only 3
million years old or less. Certainly the chances are against us ever
finding more than a small fraction of the fossilized remains of all
the dinosaur species. It is likely that a dino with the brain capacity
of a chimp or even an erectus would remain forever unknown.
And, unfortunately, the saddles and palanquins they used to ride the
less intelligent dinosaurs would have long since rotted away along with
the riding crops and other tack.
Just how sophisticated a culture could be and still not leave any
evidence 65 million years later is a thought provoking question.
Tricky... I can't think of anything that'd last *that* long (bricks
maybe?), not least because you're talking geological timescales, and
geology creeps up on *everything* eventually.
I suppose if they were Victorian level technology one might possibly
find anomalous concentrations of the remains of refined metals like
iron, steel, copper and so on. If they were more like our tech level
then possibly some samples of well decayed long lived artificial
radio-active elements. Or maybe a few bits and pieces on the moon?
Which raises a question: if humans wanted to leave a "we were here"
message into deep time, what would be the best way to do it?
--
"Do unto others as you would have them do unto you".
attrib: Pauline Reage. Cine To DVD? http://www.video2cd.co.uk
OBSF: Cartoon of two dino's talking, "If those enriched iridium fusion
reactors ever let loose, all that will be left is cockroaches and
mammals. (Far Side?)
We were here, put a monolith on the Moon, maybe several. Metals rust
brick crumbles, but we got a big sedimentary rock level just full of
lead. And our radioactive dumps.
--
Guns don't kill people; automobiles kill people.
.
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