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If I were a traveler from the stars in a small fleet visiting an alien world populated by around 7 billion people I would want to be very discreet about the visit. I would have technology that could render any craft undetectable and choose very carefully if and when to descend to the surface. I certainly would not put multi-coloured flashing lights all over the craft saying "Here I am. Look up here." So how do we view this evidence of encounters?
Quote from: jeffreyHIf I were a traveler from the stars in a small fleet visiting an alien world populated by around 7 billion people I would want to be very discreet about the visit. I would have technology that could render any craft undetectable and choose very carefully if and when to descend to the surface. I certainly would not put multi-coloured flashing lights all over the craft saying "Here I am. Look up here." So how do we view this evidence of encounters?But then again, why visit the planet without contacting the intelligent life that is there?