yeah, but i mean that could be just gov't manufactured, top secret military stuff. to believe in this we only need to say 'yeah, the government is much smarter than the smartest physicist and engineer would be in the public domain, and they cheat on us big time with ufo'

versus the alien hypothesis - 'there are life outside of the earth that are far more superior than us', which is much more far-fetched than the former hypothesis.

so...ocam's razor at work here.