Hence Sending Out 100s Of Colonies Per Year Is No More Significant To Them Than

Hence sending out 100s of colonies per year is no more significant to them than flying a 747 is to us. Solutions (?) To the Hart (or Fermi) paradox They all self-destruct They are here: UFOs They were here: Ancient astronauts (von Dnikan) They are on the way: Colonization is like diffusion, i.e. it takes a while Zoo hypothesis: we are in a zoo Reserved space for expansion Proxmire scenario: Politicians will say too expensive Maybe slow interstellar travel is not possible. The interstellar medium (ISM) is full of iron basketballs?

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