What do you guys think of UFO's?

[BAndrew]

Even though i said the very existence of an alien visitor has a good chance of contradicting a lot of what we know about physics and therefore biology, from our discussion on what time is i know that you have difficulty accepting that our knowledge of physics and biology could be denied. What good is probability if the very existence of a specific aircraft creates implications that would deny the assumptions used to measure said probability?

And how can you say an alien would have difficulty living in our solar system? If i were to assume that an alien is indeed the kind of organism that depends on water, wouldn't that mean that we, all living organisms on planet Earth, would all the more cease to exist? Would it be any wonder why an alien from deep outerspace that enters our solar system would ever seek to enter the Earth's atmosphere?

I only have to assume it correct as far as it is practical. That is no different a position than what scientists are said to take. And it is logical to assume that it may be proved wrong. Are you going to deny me the aircraft i've seen? If every human is going to deny that they've built it, should i then go around believing that a human built it? Whatever was flying that aircraft is none of my concern. I only wish to know who (or what) built it.

And while you may have stated that the Earth is habitable, you also clearly emphasized (i.e. with underlined and bold words) that there is no possible way that an alien can live in this solar system, even though you knew better than that.