Wow, some very interesting responses on here.
I like that we're talking about Occam's Razor already...doesn't that always seem to crop up? I tell you what, it might work well for some people, but I firmly believe that reality is much stranger than the strangest of fiction.
First off, my personal experience. When I was 7 years old, I used to sleep with my pillow and blanket at the end of the hallway in the upstairs of our house which had no central air, hence my reason for posting up on the floor in front of the only fan instead of in my bed which was at the far end of the hallway. One night, while sleeping soundly as usual....I awoke to a strange sound coming from outside and I proceeded to sit up and look out the window, which overlooks an alfalfa field behind the house.
There, hovering at about 40ft. above the ground, was a large circular (disc) shaped craft with bright lights coming from underneath it and with a ring of what I can only describe as "gooey light" around the lip. The sound was something metallic sounding, close to the rumble that you hear when a marching band is still far off in the distance, but combined with a rhythmic muffling sort of filter effect that made the sound seem quite clear.
Almost immediately the craft seemed to "sense" my attention, and the gooey section of light gathered at the closest point to me and in that moment I felt a surge of energy unlike anything I had ever felt before. The light knocked me back and I awoke to the sound of my parents hysterically dragging me away from the window...the fan was on fire and had melted the window curtains as well as my blanket...and it had almost reached my leg.
When I told my parents the story the next day, they explained to me that I had probably dreamed the whole thing up and that the fire was probably caused by a short circuit in the electrical system of the fan. So, like any stubborn kid, I went off to prove to myself what had happened. I went out to the field and examined the spot where I had witnessed the craft the night before. The only thing I noticed about the ground was that it seemed to be quite a bit drier in the area where the craft was, but my father told me that it was probably just a higher concentration of drainage tiles that caused the disparity. It wasn't until I started to read about crop circles that I put two and two together regarding the dry area of ground underneath the craft.
In any case, unable to find any other tangible proof, I slowly began to forget the story until I watched a video that brought the memory screeching back.
I proceeded to tell my story to a friend of mine and he pointed me towards a picture that absolutely blew my mind....
http://www.ufoevidence.org/photograp...a/Photo416.htm
The experience happened to me in Ohio, which is not far at all from where the pictures were taken.
In any case, since then I have been a keen observer of the sky, and I have witnessed many more objects of similar design and characteristics. Some of them I firmly believe are man made, and some are definitely not.
The final thing I wanted to say, and this is in response to the reality of UFO's being suppressed....
If you were a military leader, an arms dealer, a weapons contractor, or the president of the united states for that matter....would you think it in your best interest to play your highest card when your opponent is throwing out garbage?
For that matter, would you want to show your enemy your full capabilities when you are easily defeating them without doing so?
If you think that this technology would show up in the public sphere simply because it had been invented, then you don't know jack about the military, nor the way the world works.