"Clements, Robert" wrote:
> Your basic assumption is wrong: assuming that advanced technological
> intelligences are capable of living longer than the biblical three score
> years & ten (something which is basically truer of the human race even
> now), there are already a number of relativistic techniques on the table
> which make interstellar travel possible.
> (Intergalactic travel, on the other hand...)
> The simplest to builds seems (currently) to be solar sails; with beamed
> energy as a secondary (or even primary) power source. Theoretically: one
> could create a kind of highway of beamed energy between two nearby star
> systems, along which sailcraft could silently flow; & (assuming an
> efficient means of turning stellar energy into a concentrated beam), the
> process would essentially run on maintainence only....
> All the best,
> Robert Clements <Robert.Clements@dva.gov.au>
> >From: Jas[SMTP:email@example.com]
> >Sent: Saturday, May 15, 1999 12:29 AM
> >To: Carl Sagan List; firstname.lastname@example.org
> >Subject: SETI The assumption
> >Being new to this discussion, I will undoubedly raise questions that have
> >already been discussed.
> >I will certainly use the screen saver, given the choice between flying
> >The premise of SETI is that any civilization will eventually discover, use
> >emit high frequency signals into the universe. What if this (fact) is merely
> >temporary phase for a century or two, followed by discovery of something much
> >better? After all, space exploration will require something much faster than
> >the speed of light to travel and communicate.
> >The search could be for something so rare that discovery is nearly
> >Joe Assenza
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