On 29/09/2014 08:15, scott wrote:
>> But it is a fully valid question to ask, "Why are we the only life form
>> in the galaxy to ever leave their home world that we know of for
>> certain?" And, applying occam's razor (which is a method deep in the
>> heart of science), we find that the most rational, scientific answers
>> are: (A) Interstellar travel is not feasible, or (B) Interstellar travel
>> has not been discovered yet, by /any/ species in our galaxy whatsoever.
>
> Isn't there a big assumption there that we would be able to
> notice/detect any interstellar travel anywhere in the galaxy? Or are you
> assuming that any species able to do interstellar travel would, for some
> reason, visit our solar system?
>

I think that the crux of the matter is

>>  that we know of for certain?


With that clause we are on a hiding to nothing. :-)

-- 

Regards
     Stephen

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