"Why would they let themselves be seen?"

For the same reason we let ourselves be seen by chimps and penguins and spiders when we are out doing photography for National Geographic, Rap.

They aren't worried about our puny little capabilities to interfere with them!

I mean, hell, I saw some ships back in the late 60's that pretty well HAD to be alien craft. I've met quite a number of trustworthy individuals, including professional pilots, who'd have similar experiences to mine...and then some. I've heard testimony from professionals and government people from Jimmy Carter on down about THEIR personal sightings of what they feel must have been alien craft.

So the visitors ARE letting themselves be seen...because we CAN'T flippin' DO anything about it anyway, so why should they give 2 hoots whether a few of us see them or not????? (specially when those few are not even believed by the rest....)

Plus, Rap, I don't think they're all coming from just one place, and I don't think they are all tied to exactly the same agenda.

There may well be some of them who operate in stealth mode, and others who do not, for a simply tremendous variety of possible reasons...and this planet may be just a rather minor stop on their travels. An interesting place to observe now and then.

We may think we are the center of the Universe, my friend, but I seriously doubt that anyone ELSE thinks we are.