Re: starship-design: Fermi's Paradox - Drake's Equation will have to be rewritten

["Ben Franchuk (Woodelf)" <bfranchuk@jetnet.ab.ca>]

>Such an explanation may be a solution to a half-century-old question
on why
 >we have not seen evidence of extraterrestrial life. The problem,
proposed
 > by
 >Nobel laureate physicist Enrico Fermi and dubbed the "Fermi Paradox",
notes
 >that a civilization traveling at only one-thousandth the speed of
light
 >could traverse the galaxy in 100 million years, far less than the age
of
 > the
 >galaxy or the universe. "Where are they?" Fermi was said to have asked
 >rhetorically.

  Waiting for sombody to put out the welcome mat is my guess.
  I can see them arriving and leaving with very little impact.