I think panspermia (the first theory to which you refer) is very reasonable. For some reason I thought Crick subscribed to the more exotic version.
--- ravi <ravi at platosbeard.org> wrote:
>
> This latter version (life originated elsewhere) is
> more reasonable
> and I believe considered quite possible by the
> experts, than the more
> exotic idea that ETs planted life here!
>
> --ravi
>
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