On 4/10/2012 9:42 AM, Brad Guth wrote:

Of any humanoids or other intelligent species that's capable of
surviving interstellar treks, at least technically should have no
problems with remaining stealthy or even capable of infiltrating and
mingle within any community of existing life-forms upon any given
planet they chose to study or even to populate and commercialize by
extracting valuable elements in order to suit their own needs.

I don't follow that reasoning at all. You're attempting to extrapolate
from some, ex hypothesi feasable, technology to the feasibility of any
other technology that might be useful.

Sylvia.