posted on Feb, 20 2011 @ 03:56 PM
Just my opinion, as I found your question interesting.
They say that "if a hammer is all you have, everything looks like a nail" and I tend to agree. From the point of view of human perception, we tend
to focus our attention on what we expect to see. If you ever went searching for seashells on a beach, you probably noticed that after a while you
only see seashells; you can stumble on a gold nugget the size of your fist and wouldn't notice it. I think people see the forms they expect to see,
and ignore everything else, until whatever else is out there become too obvious.
From the point of view of UFO's, I think that the round shape is the classical, original one, witnessed all through our history. My personal opinion
is that the rest of them may be improvements or modifications dictated by the earth atmosphere, gravitation, air density and whatever other
considerations might be there. Or they may have different purposes; short or long distance spaceships, anti-gravitational, for traveling through water
or ice or earth, for studies or for protection, and so on. After all, who knows how different they really are.
I found myself often thinking about UFOs also, and it's a pity we only have our imagination to answer the countless questions they arise.
Nice topic, S&F.